INTRODUCTION TO COMPUTERS

UNIT 1

Q1. Describe Charles Babbage works in the history of computers. (Board 2014) 09501001

Q2. Describe the advancements in the computers during 1950’s and 1960’s. (Board 2015) 09501002

Q3. Write a note on different Computer generations, briefly explaining their features.

(Board 2016) 09501003

Q4. What is the difference between a digital and an analog computer? (Board 2016) 09501004

Q5. Write a short note on following: 09501005

a. Pocket Computer b. Laptop Computer c. Micro Computer

Q6. Describe the impact of Computers and Internet on society. 09501006

Q7. Define Computers. Briefly describe classification of Computer. (Board 2010) 09501007

Q8. Modern Computers are based on stored program concept. Who introduced the concept? Discuss his/ her contribution in the history of Computer. 09501008

Q9. Briefly name and describe some of applications of Computer. (Board 2010) 09501009

Q10. What is the difference between low level and high level languages? (Board 2013) 09501010

Q11. Discuss some negative and positive aspects of the use of Internet in our society. 09501011

Q12. What is a compiler and interpreter? (Board 2012) 09501012

Q13. Write a note on the following: (Board 2013) 09501013

Visual Basic

LISP

C and C++

Q14. What is Computer? Explain its types. (Board 2016) 09501014

Q15. Write a note on following: (Board 2010) 09501015

1. FORTRAN 2. COBOL 3. PASCAL 4. JAVA 5. BASIC

Q16. What is Language Translator? Explain its types. (Board 2011) 09501016

Q17. What is online banking? Write the advantages of Online Banking. (Board 2015) 09501017

SHORT QUESTIONS

Q1. What is ABACUS? (Board 2013) 09501019

Q2. What is computer? 09501020

Q3. Write down some examples of Computer applications. 09501021

Q4 .Who is a Charles Babbage?

(Board 2013) 09501022

Q5 .What is the Difference Engine? 09501023

Q6 .What is Analytical Engine? 09501024

Q7. Why is Charles Babbage called father of computer? 09501025

Q8. What is Electronic digital computer? Or What is ENIAC? (Board 2013) 09501026

Q9. What is the basic difference between Vacuum Tube and transistor?

(Board 2013) 09501027

Q10. Differentiate between Laptop and Desktop Computers. (Board 2013) 09501028

Q11.Who invented Difference Engine? (Board 2014) 09501029

Q:12 Which technology was used in first generation computer? (Board 2014) 09501030

Q 13. What is Napier’s bones? 09501031

Q 14. What is Pascaline calculator? 09501032

Q 15. Who was Von Leibniz? 09501033

Q 16. What are punched cards? 09501034

Q 17 What is the idea of stored program? 09501035

Q 18. What were the advancements in 1980’s? 09501036

Q 19 What is UNIVAC?(Board 2013) 09501037

Q20. What is transistor and when was it invented? 09501038

Q21. Write down the characteristics of first generation of computers. 09501039

Q22. Write down characteristics of second generation of computers. 09501040

Q23. Write down characteristics of third generation of computers. 09501041

Q24. Write down characteristics of fourth generation of computers.

(Board 2015) 09501042

Q25. Write down characteristics of fifth generation of computers. 09501043

Q26. Describe Analog Computer. (Board 2010) 09501044

Q27. Describe Digital Computers.

(Board 2016) 09501045

Q28. Describe Mark-1. 09501046

Q29. Describe Hybrid Computers. (Board 2014) 09501047

Q30. What do you mean by powerful Super Computer? (Board 2013) 09501048

Q31. What is Terminal? 09501049

Q32. Describe Mainframe Computer.09501050

Q33. What is Mini Computer? 09501051

Q34. Describe Micro Computer. (Board 2014) 09501052

Q35. Describe Pocket (Palmtop) Computers.

09501053

Q36 Write the purpose of Laptop Computer.

(Board 2015) 09501054

Q37. What is Distance learning? 09501055

Q38. What is Virtual Class Room? 09501056

Q39. What is the impact of Computers in education? 09501057

Q40. What is the impact of Computers in business? 09501058

Q41. What is the purpose of ATMs machine? 09501059

Q42. What is the major drawback of ENIAC? 09501060

Q43. What is Bar Code? Or What is Universal Production Code(UPC)? 09501061

Q44. Write two purposes of Computer Simulations. (Board 2016) 09501062

Q45. What are computer applications in entertainment? 09501063

Q46. What is programming language? (Board 2016) 09501064

Q47. What are Low-Level Languages? (Board 2010) 09501065

Q48. What is Machine Language? (Board 2011) 09501066

Q49. Describe Assembly Language. (Board 2010) 09501067

Q50. Describe High-Level Language. (Board 2016) 09501068

Q51. Write a note on FORTRAN language. 09501069

Q52. Write a note on BASIC. (Board 2010) 09501070

Q53. Write a note on COBOL. (Board 2010) 09501071

Q54. Write a note on LISP. 09501072

Q55. Write a note on Pascal Language. 09501073

Q56. What is C Language? 09501074

Q57. What is C++ language? 09501075

Q58. Write a note on Visual Basic. 09501076

Q59. Write a note on JAVA. 09501077

Q60. What are language translators? (Board 2015) 09501078

Q61. Write a note on Compiler. (Board 2009) 09501079

Q62. What is Assembler? (Board 2010) 09501080

Q63. What is Interpreter?

(Board 2012) 09501081

Q64. How many types of Low-Level Languages are there? 09501082

Q65. Define Mnemonics code. 09501083

Q66. What is deassembler? 09501084

Q67. Differentiate between high and low level languages. (Board 2015) 09501085

Q68. What is slide rule? 09501086

MULTIPLE CHOICE QUESTIONS

1. The History of computers starts out about __________ years ago. 09501087

(a) 3000 (b) 5000

2. __________ created logarithm tables to facilitate calculation. 09501088

(a) John Napier (b) Charles Babbage

3. __________ invented a machine that had a system of gears. 09501089

(a) Aiken (b) Pascal

4. __________ designed an automatic mechanical calculating machine called difference engine. 09501090

(a) Charles Babbage (b) Hollerith
(c) Pascal (d) Eckert

5. Charles Babbage had a working model to demonstrate in _________. 09501091

(a) 1832 (b) 1875

6. In _______ Herman Hollerith developed the first electro-mechanical punch card tabulator. 09501092

(a) 1890 (b) 1942

7. ________ looks at each line of program and checks for possible errors. 09501093

(a) Compiler (b) Assembler

8. A ________ is a program that translates a whole program at once into machine language. 09501094

(a) Assembler (b) Compiler

9. An __________ is a program that translates an assembly language program into machine code. 09501095

(a) Assembler (b) Compiler

10. __________ are the programs that translate a high or low level language into machine code. 09501096

(a) Word processors

(b) Display managers

(d) None of these

11. _______________ develops JAVA language. 09501097

(a) Herman Hollerith

(b) Charles Babbage

(d) IBM

12. _____ is used to create simple interfaces to MS-Excel and Access. 09501098

(a) JAVA (b) Visual Basic

13. Visual Basic was designed to compete with: 09501099

(a) C language (b) C++

14. VB 2.0 version was released in: 09501100

(a) 1993 (b) 1994

15. With the release of Visual Basic version __________ VB became the fastest programming language. 09501101

(a) VB 2.0 (b) VB 3.0

16. C language was developed in: 09501102

(a) 1962 (b) 1954

17. C++ was an extension to __________ language. 09501103

(a) LISP (b) C++

18. C++ is mostly used in: 09501104

(a) OS

(b) Games

(d) Business Application

19. Pascal has features of: 09501105

(a) COBOL (b) FORTRAN

20. The combination of features input/output and solid mathematical features made the ____ language successful. 09501106

(a) C++ (b) COBOL

21. The syntax of __________ languages was very difficult as compared with the ordinary language. 09501107

(a) Assembly (b) Fortran

22. Fortran was good at handling: 09501108

(a) Input (b) Output

23. COBOL’s data type: 09501109

(a) Numbers (b) String of text

24. COBOL is easy to learn because its statements have __ like grammar. 09501110

(a) Urdu (b) English

25. BASIC was designed to allow students to write programs using _______ computer terminals. 09501111

(a) Time-sharing (b) Single tasking

26. BASIC was intended for __________ learning programming concepts. 09501112

(a) Difficult (b) Easy

27. __________ language was easy to use for beginners. 09501113

(a) BASIC (b) C++

28. __________ language provides clear and friendly error messages. 09501114

(a) C (b) C++

29. ___ language does not require an understanding of computer hardware. 09501115

(a) Machine (b) C

30. LISP stands for: 09501116

(a) List processing language

(b) List protection language

(d) List purpose language

31. LISP is designed for __________ research. 09501117

(a) Business

(b) Artificial intelligence

(d) None of these

32. In________ FORTRAN was appeared as first computer language. 09501118

(a) 1957 (b) 1946

33. Pascal combined the best features of COBOL, FORTRAN and ____. 09501119

(a) C (b) C++

34. FOTRAN stands for: 09501120

(a) First language

(b) Formula Translation

(d) Formal language

35. FORTRAN language was mainly used for _______ purposes. 09501121

(a) Business (b) Entertainment

36. __________ level languages are close to human language. 09501122

(a) High (b) Low

37. __________ level languages are known as third generation languages. 09501123

(a) High (b) Low

38. __________ language is very close to machine language. 09501124

(a) Assembly (b) JAVA

39. The commands represented in assembly language are represented by short names called: 09501125

(a) Symbol (b) Operations

40. ID means in assembly language _________. 09501126

(a) Load Accumulator

(b) Load display

(d) Little display

41. Programs written in Assembly language code are translated into machine code by_________. 09501127

(a) Compiler (b) Assembler

42. Machine code can be converted into Assembly code using a ____. 09501128

(a) Assembler (b) Deassembler

43. ___ language consists of English words, basic mathematical symbols. 09501129

(a) High (b) Low

44. OP code stands for 09501130

(a) Operation code

(b) Opposite code

(d) All of these

45. _______ language provides the programmer with a high degree of control.

(a) High level (b) Low level

46. The set of instructions to solve any kind of problem is called ________. 09501132

(a) Computer program

(b) Library

(d) Floppy disk

47. Computers can be used to watch television shows being broadcasted on ___. 09501133

(a) Internet (b) Dish antennas

48. Computers of first generation used _____ to perform calculations. 09501134

(a) Transistor

(b) Vacuum tube

(d) Microprocessor

49. ______ get hot and burn out. 09501135

(a) Vacuum tube

(b) Transistor

(d) Microprocessor

50. __________ are most important computers of first generation. 09501136

(a) ENIAC & UNIVAC-I

(b) IBM 7094

(d) IBM PC

51. First general purpose electronic digital computer was_______. 09501137

(a) ENIAC (b) UNIVAC

52. ENIAC was designed in_____. 09501138

(a) 1947 (b) 1951

53. ENIAC consumed __________ kilowatts of power. 09501139

(a) 100 (b) 140

54. ENIAC was designed by _____. 09501140

(a) William machly & John Eckert

(b) IBM

(d) William Shockly

55. ENIAC was capable of __________ additions per second. 09501141

(a) 1000 (b) 5000

56. In _______ Eckert and Machly formed Eckert-Machly Computer Corporation.

(a) 1946 (b) 1947 09501142

57. The first successful machine of Eckert and Machly Computer Corporation was _________. 09501143

(a) ENIAC (b) UNIVAC

58. UNIVAC was delivered to US bureau of census in _______. 09501144

(a) 1952 (b) 1951

59. Second generation computers used:

09501145

(a) Vacuum tube (b) Transistors

60. Transistor was invented in ____. 09501146

(a) 1946 (b) 1947

61. _____ transistors are about same size as one vacuum tube in a computer. 09501147

(a) 400 (b) 300

62. A transistor can work __________ times faster than a vacuum tube. 09501148

(a) 30 (b) 20

63. The major change in the electronic computer was the replacement of _______ with transistors. 09501149

(a) IC (b) Microprocessor

64. The examples of second generation computers are 09501150

(a) IBM 7094

(b) IBM 1400 Series

(d) All of these

65. The concept of the IC was developed by __________ in 1958. 09501151

(a) Charles Babbage

(b) Herman Hollerith

(d) Jack St. Clair Kilby

66. The concept of the IC was developed by Jack St. Clair Kilby in _____. 09501152

(a) 1946 (b) 1957

67. First IC was invented and used in __________. 09501153

(a) 1946 (b) 1961

68. An IC is about ____ square inch. 09501154

(a) 1/4 (b) 1/2

69. The major invention of third generation of computers was the development of ________.

(a) Integrated circuit 09501155

(b) Transistor

(d) Microprocessor

70. A single IC chip contains __________ of transistors. 09501156

(a) Millions (b) Hundred

71. The third generation computer used ______ as internal storage. 09501157

(a) Magnetic core memories

(b) IC

(d) Chip

72. The most successful computers of third generation were: 09501158

(a) UNIVAC 1108

(b) UNIVAC 9000

(d) Both (a) and (b)

73. __________ produced first micro-processor in 1971. 09501159

(a) John Barden

(b) William Brattian

(d) Ted Hoff

74. The name of first microprocessor was:

(a) Intel 4004 (b) Intel 100 09501160

75. Ted Hoff produced the first microprocessor in _______. 09501161

(a) 1972 (b) 1971

76. _______ were the advancements made in integrated circuit. 09501162

(a) LSI & VLSI

(b) Magnetic core memory

(d) All of above

77. Examples of fourth generation computers are __________. 09501163

(a) Macintosh (b) IBM PC

78. Fifth generation computing devices are based on __________. 09501164

(a) Artificial intelligence

(b) Transistors

(d) Microprocessor

79. General purpose analog computers were first built in __________. 09501165

(a) 1930s (b) 1940s

80. Digital computers process data in numerical form using _______. 09501166

(a) Analog circuits

(b) Digital circuits

(d) LSI

81. In early 1940’s Aiken built the first general purpose digital computer called:

(a) ABACUS 09501167

(b) Mark-I

(d) ENIAC

82. The digital computers perform arithmetic and logic operations with _______ values. 09501168

(a) Positive (b) Negative

83. Some super computers such as_____ can house thousands of processors: 09501169

(a) IBM S/390 (b) IBM-PC

84. The largest type of computer in common use is __________. 09501170

(a) Micro computer

(b) Super computer

(d) Pocket computer

85. Airlines use large systems for flight scheduling, reservation, ticketing. 09501171

(a) Supercomputer

(b) Minicomputer

(d) Laptop computer

86. __________ is an example of mainframe computers. 09501172

(a) IBM S/390 (b) IBM PC

87. __________ got their name because of their small size. 09501173

(a) Supercomputer

(b) Minicomputer

(d) Desktop computer

88. Supercomputers can cost _________ of million of dollars. 09501174

(a) Five (b) Tens

89. _______ is an example of minicomputer. 09501175

(a) IBM PC (b) Macintosh

90. In __________ IBM called its first personal computer IBM-PC. 09501176

(a) 1981 (b) 1946

91. One big factor of the popularity of microcomputer is _________. 09501177

(a) Its beauty (b) High speed

92. A ________ computer has to have small, light batteries that lasts long. 09501178

(a) Mini (b) Micro

93. One problem with small computers is that they don’t have ____ attached. 09501179

(a) Full size keyboard

(b) CPU

(d) Mouse

94. The screen of laptop is usually a large __________. 09501180

(a) Vacuum tube (b) Picture tube

95. The most common operating system for the PC is ________. 09501181

(a) LINUX

(b) UNIX

(d) DOS

96. __________ given the idea of stored program. 09501182

(a) Von Neumann

(b) Babbage

(d) William Sheckley

97. In 1950 two important discoveries were magnetic core memory and ____. 09501183

(a) Transistor circuit element

(b) LSI

(d) Intel 4004

98. _________ computers are a combination of analog and digital computers. 09501184

(a) IBM PC (b) Apple Macintosh

99. When people talk about _________ they mean an IBM compatible & computer based on Intel microprocessor. 09501185

(a) Keyboard

(b) PC (Personal Computer)

(d) Mobile

100. Which of the following is not a high level language? 09501186

(a) FORTRAN

(b) BASIC

(d) Assembly Language

101. A terminal consists of 09501187

(a) Keyboard, mouse, printer

(b) Keyboard and monitor

(d) System unit and 1/0 devices

102. Minicomputer is 09501188

(a) Faster than micro computer

(b) Expensive than micro computer

(d) Both (a) & (b)

103. DOS operating system was developed by __________. 09501189

(a) Microsoft

(b) ISO

(d) Sun Microsystems

104. First counting device was: 09501190

(a) ABACUS (b) Pascaline

105. Each wire of ABACUS supports a number of: 09501191

(a) Beads

(b) Stones

(d) None of these

106. ABACUS was developed about years ago. 09501192

(a) 3000 (b) 2000

107. Binary language consists of: 09501193

(a) 0,1 (b) 1,1

108. The output of compiler is called:

09501194

(a) Object code (b) Source code

109. Translate the instructions of program step by step. 09501195

(a) Compiler (b) Assembler

110. Which language supports object-oriented programming? 09501196

(a) BASIC (b) Pascal

111. __________ invented a machine that had a system of gears. 09501197

(a) Charles (b) Neumann

112. There are __________ types of computers. 09501198

(a) Five (b) Two

113. The largest type of computer in common use is the ____ computer. 09501199

(a) Super (b) Mainframe

114. __________ is a monitor and keyboard connected to a mainframe. 09501200

(a) Record (b) Terminal

115. Microcomputers are also called __________. 09501201

(a) PC (b) Terminal

116. Laptops are usually __________ than Desktop computers. 09501202

(a) Cheap (b) Powerful

117. Macintosh is made by 09501203

(a) Apple (b) IBM

118. Distant learning is possible through

(a) Virtual class rooms 09501204

(b) Internet

(d) All of above

119. When we operate our account while sitting in our home through some network then it is called ________. 09501205

(a) Online banking

(b) Networking

(d) None of above

120. There are __________ types of computer languages. 09501206

(a) One (b) Two

121. Mnemonics is pronounced as 09501207

(a) NE-MONICS

(b) M-NEMONICS

(d) None of the above

122. Language translator can be divided into __________ types. 09501208

(a) One (b) Two

123. Machine language consists of __________. 09501209

(a) Binary digits (b) Decimal

124. __________ language is very useful for compiler writing. 09501210

(a) C++ (b) BASIC

125. C++ was extension of __________ language. 09501211

(a) COBOL (b) C

126. Which of the following is not true about personal computers? 09501212

(a) The PC was introduced by IBM in 1881

(b) Uses the DOS or windows

operating system developed by

Microsoft Corporation

(d) None of above

127. First electronic digital computer was:

(a) VLSI (b) ENIAC 09501213

128. The first computer that used Vacuum tubes was: 09501214

(a) Mark I (b) ENIAC

129. A modern computer is an electronic device

(a) Data Device 09501215

(b) Data processing

(d) Logical device

130. One of the first recognized calculating devices was the _______ 09501216

(a) Computer (b) ABACUS

131. UPC stands for _________. 09501217

(a) Universal production code

(b) Universal product code

(d) User product code

132.______ language consists of short phrases of alphanumeric symbols called mnemonics. 09501218

(a) Assembly (b) Machine

133. A translator is a: 09501219

(a) System software

(b) Low -Level Lang

(d) Application software

134. A slide rule consists of two scales (i) the Rule and (ii) the ________ 09501220

(a) Slide (b) Ruler

135. One of the earliest and the simplest computing devices was ________ 09501221

(a) Vacuum tube (b) ABACUS

136. The idea of storing a program and data in memory was suggested by: 09501222

(a) John Von Neuman

(b) Dr. Abdul Qadeer

(d) Pascal

137. Assembly Language uses 09501223

(a) English Words

(b) Mnemonics

(d) Binary digits

COMPUTER COMPONENTS

UNIT 2

Q1. What is the difference between Computer hardware and software? (Board 2012) 09502001

Q2. Write short notes on the following: (Board 2010) 09502002

a) Central Processing Unit b) Arithmetic and Logic Unit c) Control Unit

Q: 3 What is system bus? Differentiate between data bus, address bus and control bus.

(Board 2012) 09502003

Q: 4 Differentiate between system software and application software. (Board 2013) 09502004

Q: 5 Write a note on main memory and Secondary Memory. 09502005

Q: 6 What are different kinds of input devices? 09502006

Q: 7 Define Magnetic Disk. (Board 2012) 09502007

Q: 8 Explain Random Access Memory. (Board 2014) 09502008

Q: 9 What is computer Port? Explain different ports. (Board 2015) 09502009

Q: 10 Write comprehensive note on the basic organization of computer. (Board 2015) 09502010

Short Questions

Q.1. Define computer. (Board 2013) 09502011

Q.2. Define electronic data processing

or What is EDP? (Board 2016) 09502012

Q.3 What are the basic components of computer system? (Board 2012) 09502013

Q.4. Define Computer Hardware. (Board 2016) 09502014

Q.5. In how many units can computer hardware be divided into? 09502015

Q.6. Define Input Unit. (Board 2013) 09502016

Q.7. Define Output unit. (Board 2014) 09502017

Q.8. Define System Unit. (Board 2013) 09502018

Q.9. What is Motherboard? 09502019

Q.10. What is Computer Software? (Board 2016) 09502020

Q.11. What is a computer program?

(Board 2016) 09502021

Q.12. Describe some devices that perform the function of both input and output devices. 09502022

Q.13. Describe organization of computer. (Board 2013) 09502023

Q.14. State the importance of CPU in computer. (Board 2016) 09502024

Q.15. Describe the basic functions of ALU. (Board 2014) 09502025

Q.16. Define logical operations and its conditions. 09502026

Q.17. Define Control Unit (CU). (Board 2012) 09502027

Q.18. Define Registers. 09502028

Q 19. What do you mean by clock pulses? 09502029

Q.20. Define System bus.(Board 2015) 09502030

Q.21. How many types of buses are there?

09502031

Q.22. Define Data Bus. (Board 2009) 09502032

Q.23. Define Address Bus. (Board 2013) 09502033

Q.24. Define Control bus. (Board 2013) 09502034

Q.25 What is Computer Storage? 09502035

Q.26 What is Main Memory/Primary Storage? 09502036

Q.27 What is Secondary Memory or Secondary Storage? 09502037

Q.28 Define Input Devices. 09502038

Q.29 What is a Port? (Board 2016) 09502039

Q.30. How many kinds of ports are there?

09502040

Q.31. What is Serial Port? (Board 2016) 09502041

Q.32. What is Parallel Port? 09502042

Q.33. What is USB Port? (Board 2012) 09502043

Q.34. Write a note on application software.

(Board 2013) 09502044

Q.35. Write a note on system software.

(Board 2014) 09502045

Q 36. Describe the main units of computer. 09502046

MULTIPLE CHOICE QUESTIONS

1. Which of the following device is not inside the system unit? 09502047

(a) RAM (b) Monitor

2. Which of the following is a part of computer system? 09502048

(a) Central Processing Unit (CPU)

(b) Memory

(d) All of these

3. The Arithmetic and logic unit can perform: 09502049

(a) Addition (b) Subtraction

4. The bus is used to connect the following units: 09502050

(a) Central Processing Unit (CPU)

(b) Main Memory (RAM, ROM)

(d) All of the above

5. Which of the following is not a type of bus in computer? 09502051

(a) Data Bus (b) Address Bus

6. The process of performing arithmetic & Logic operations with the help of computer is known as: 09502052

(a) EDP (b) EPD

7. These are the basic components of computer system 09502053

(a) Hardware (b) Software

8. In a broader sense a computer can be divided into following hardware units: 09502054

(a) Input Unit (b) Output unit

9. Which of the following is not an input device? 09502055

(a) Mouse (b) Keyboard

10. Which of the following is not an output device? 09502056

(a) Monitor (b) Microphone

11. The most important component of a system unit is: 09502057

(a) Motherboard (b) CPU

12. Motherboard is normally made up of:

(a) Carbon (b) Plastic 09502058

13. Which of the following is not the part of system unit? 09502059

(a) RAM (b) Hard Disk

14. The major categories of computer software are: 09502060

(a) System software

(b) Application software

(d) Both (a) & (b)

15. Which of the following is not system software? 09502061

(a) Operating system

(b) MS Word

(d) File Manager

16. Which of the following is not an application software? 09502062

(a) Operating system

(b) Software package

(d) Database

17. Which of the following is not the major function of a computer? 09502063

(a) Store data

(b) Natural intelligence

(d) Process the Data

18. Which is not the part of a CPU? 09502064

(a) ROM (b) CU

19. The Arithmetic operations are: 09502065

(a) Addition (b) Subtraction

20. A logical operation is usually a: 09502066

(a) Comparison of numbers

(b) Addition of numbers

(d) None of these

21. Logical operation can test the conditions:

(a) Equal to (b) Less than 09502067

22. The register is a: 09502068

(a) Temporary storage

(b) Permanent storage

(d) none of these

23. The pulses that are used to regulate and control the speed of all the operations are:

(a) Clock (b) Electrical 09502069

24. The bus is used to connect the following units: 09502070

(a) CPU, main memory

(b) Input/output Devices

(d) Both (a) & (b)

25. A bus with 32 lines can carry data. 09502071

(a) 2 bytes (b) 4 bytes

26. Which one is not a bus? 09502072

(a) Data bus (b) USB

27. Which of the following is a most common bus? 09502073

(a) Data bus (b) Address bus

28. The bus that connects the CPU, memory, input/output devices and all secondary storage devices is: 09502074

(a) Control bus (b) Address bus

29. The bus that only connects CPU and memory is: 09502075

(a) Address bus (b) Data bus

30. Address Bus with 8 lines can address – memory locations. 09502076

(a) 255 (b) 256

31. Which of the following is an example of the main memory? 09502077

(a) Hard Disk (b) Floppy Disk

32. Input/output devices are also known as:

(a) Secondary Devices 09502078

(b) Volatile memory

(d) Non-Volatile Devices

33. The socket that enables an external device such as printer to be attached to the computer is known as: 09502079

(a) Bus (b) Port

34. Which of the following is not a part of ports? 09502080

(a) Serial Port (b) Parallel Port

35. Parallel port has: 09502081

(a) 25 lines (b) 8 lines

36. Parallel port is also known as: 09502082

(a) Printer Port (b) LPT

37. LPT port has __________ signal lines and _________ ground lines. 09502083

(a) 17, 8 (b) 20, 5

38. USB port has a maximum bandwidth of: 09502084

(a) 16 Mbit/sec (b) 08 Mbits/sec

39. USB stands for: 09502085

(a) Universal Serial Byte

(b) Universal South Bus

(d) None of these

40. By USB port we can attach up to: 09502086

(a) 128 devices (b) 123 devices

41. The horizontal casing is known as: 09502087

(a) Desktop (b) Vertical

42. The vertical casing is known as: 09502088

(a) Desktop

(b) Vertical Bar casing

(d) System board casing

43. Application software is: 09502089

(a) Word Processor

(b) Spread sheet

(d) All of these

44. It is called the brain of computer: 09502090

(a) System unit (b) CPU

45. It is called the heart of computer: 09502091

(a) ALU (b) CU

46. Which is a temporary storage device inside the CPU? 09502092

(a) ALU (b) Floppy disk

47. This is an important part of computer hardware. 09502093

(a) CPU (b) CU

48. It controls the signal between CPU and other devices. 09502094

(a) Data bus (b) Control bus

49. RAM stand for: 09502095

(a) Read only memory

(b) Random Access Memory

(d) Readable memory

50. Magnetic tape is a ____device. 09502096

(a) Storage (b) Primary

51. Input unit of computer system depends on:

(a) Output (b) Storage 09502097

52. System unit consists of different parts which are in the: 09502098

(a) Square box (b) Round box

53. Motherboard is an important part of: 09502099

(a) Input unit (b) Output unit

54. Electronic pathway of motherboard connects the different parts of __. 095020100

(a) ALU (b) Control unit

55. Devices are connected with a communication channel called: 09502101

(a) Registers (b) Bus

56. Traveling speed of data depends on ___________ in buses. 09502102

(a) Signals (b) Cables

57. A complete program is a set of instructions given to the____ to solve a problem. 09502103

(a) User (b) Output unit

58. ___ is called the volatile memory. 09502104

(a) RAM (b) ROM

59. How many types of ports are there?09502105

(a) 2 (b) 3

60. Main memory is faster than: 09502106

(a) ROM

(b) Secondary Memory

(d)None of these

61. The main memory is present on the ____________. 09502107

(a) CPU (b) ALU

62. USB port can connect devices: 09502108

(a) 127 (b) 250

63. Internal memory units that are the small temporary storage of a computer are called _______. 09502109

(a) Accumulators (b) Registers

64. Which of the following is used to produce soft copy? 09502110

(a) Laser Printer (b) Plotter

65. What is another name of computer storage? 09502111

(a) ALU (b) Computer Memory

66. ________ is an important register of ALU. 09502112

(a) Buses (b) Register

67. ADD, SUBTRACT, INCREMENT, DECREMENT are called____ operations.

(a) Controls (b) Arithmetic 09502113 (c) Logical (d) None of these

68. Computer storage is also called computer______. 09502114

(a) Memory (b) RAM

69. Main memory is the computer's _____ storage. 09502115

(a) Primary (b) Memory

70. RAM of a Computer is its: 09502116

(a) Permanent Memory

(b) Secondary Memory

(d) Auxiliary Memory

71. Which one is an example of temporary storage device? 09502117

(a) HDD (b) ALU

72. The brain of computer that executes program instructions 09502118

(a) RAM (b) Motherboard

73. The central processing unit is a set of ....

electronic circuitry: 09502119

(a) Easy (b) Large

INPUT / OUTPUT DEVICES

UNIT 3

Q 1: Name different categories of input devices. (Board 2010) 09503001

Q 2: What is a keyboard? Name different keys categories on the keyboard. 09503002

Q: 3 Name five important keys on a keyboard along with their functions. 09503003

Q: 4 What is voice recognition Software? Explain. (Board 2012) 09503004

Q: 5 Define Scanner. (Board 2015) 09503005

Q: 6 What is a monitor? Differentiate between monochrome and color monitors.

(Board 2012) 09503006

Q: 7 Define. 09503007

a) Flat Panel Display b) Liquid Panel Display

Q: 8 Write a note on different kinds of printers. (Board 2016) 09503008

Q: 9 What is a Plotter? Explain its types. (Board 2012) 09503009

Q: 10 What is a keyboard? Explain different keys categories on the keyboard. (Board 2014) 09503010

Q: 11 Explain the functions of the following keys. 09503011

CTRL KEY, ALT KEY, TAB, BACKSPACE KEY, HOME, INSERT, SPACE BAR, PAGE UP, PAGE DOWN, END KEY

Q: 12 What are Input Devices? Explain some Input Devices. (Board 2014) 09503012

Q: 13 What is Monitor? Explain its types. (Board 2016) 09503013

SHORT QUESTIONS

Q: 1 Define input devices. 09503014

Q: 2 What is Keyboard? 09503015

Q: 3 Define Alphanumeric Keys. 09503016

Q: 4 Define Alphabet Keys. 09503017

Q: 5 What is QWERTY? 09503018

Q: 6 Define Number keys and Special character keys. 09503019

Q: 7 What is the purpose of Function Keys? 09503020

Q: 8 Define Numeric Keys. 09503021

Q: 9 What is the purpose of Cursor control keys? 09503022

Q: 10 What is the difference between back space and delete key? 09503023

Q: 11 What is the purpose of TAB key? 09503024

Q: 12 Name different keys categories on the keyboard. 09503025

Q: 13 What is Mouse? (Board 2014) 09503026

Q: 14 What is the purpose of cursor? 09503027

Q: 15 What is a Pointer? 09503028

Q: 16 What is trackball? ` (Board 2013) 09503029

Q: 17 What are the advantages of trackballs over mouse? 09503030

Q: 18 Describe two uses of joystick. (Board 2015) 09503031

Q: 19 What is the difference between Mouse and Joystick? 09503032

Q: 20 What is Triggers? 09503033

Q: 21 What is a Microphone? (Board 2014) 09503034

Q:22 What is a Light Pen? (Board 2014) 09503035

Q:23 What is a digital camera? (Board 2014) 09503036

Q:24 What is a disk drive? 09503037

Q:25 What is Mouse event? (Board 2015) 09503038

Q:26 Define Voice Recognition. (Board 2013) 09503039

Q: 27 Define OCR Software. (Board 2010) 09503040

Q: 28 What is old Voice recognition? 09503041

Q: 29 What is discrete speech? 09503042

Q: 30 Define output devices. (Board 2015) 09503043

Q: 31 What is a monitor? 09503044

Q: 32 Describe the function of video controller. (Board 2010) 09503045

Q: 33 Define Monochrome monitors. 09503046

Q: 34 Define color monitors. 09503047

Q:35What is CRT Monitor? (Board 2014) 09503048

Q: 36 What is flat Panel Display? 09503049

Q: 37 What is Liquid Crystal Display? 09503050

Q: 38 What is a printer? 09503051

Q: 39 What is the difference between impact printers and non-impact printers?

(Board 2014) 09503052

Q: 40 Define dot matrix printers. 09503053

Q: 41 What is daisy wheel printer? 09503054

Q: 42 What is line printer? 09503055

Q: 43 Define LASER printer. (Board 2012) 09503056

Q: 44 Define electrostatic printer. 09503057

Q: 45 Define inkjet printer and DPI. (Board 2010) 09503058

Q: 46 What is Electro thermal printer? 09503059

Q: 47 Define plotters. Write its types names. (Board 2013) 09503060

Q: 48 What is the difference between printer and plotter? 09503061

Q: 49 What is the mechanism of drum plotter? 09503062

Q: 50 What is the mechanism of Flatbed plotter? 09503063

Q: 51 What is the mechanism of Electrostatic plotter? 09503064

Q: 52 What is CD writer? 09503065

Q: 53 What are CDRW drives? 09503066

Q: 54 What is the resolution? (Board 2013) 09503067

Q: 55 Differentiate between Enter and ESC keys. (Board 2014) 09503068

Q: 56 Write any two modes of insert key. (Board 2014) 09503069

Q: 57 What is the difference between soft copy and hard copy? (Board 2012) 09503070

MULTIPLE CHOICE QUESTIONS

1. The printing mechanism of __________ involves a pen and a drum: 09503071

(a) Drum Plotter

(b) Electrostatic Plotter

(d) Flatbed plotter

2. Which of the following is not an input device? 09503072

(a) Keyboard (b) Floppy disk drive

3. Which printer uses LASER beam to burn special ink called toner on the page to create permanent image. 09503073

(a) Daisy wheel (b) Dot matrix

4. Flat panel displays are usually used in:

(a) Personal computers 09503074

(b) Super computers

(d) Minicomputer

5. Hard disk is __________ disk that stores data: 09503075

(a) Read only (b) Magnetic

6. The keys on computer keyboard are often classified as follows? 09503076

(a) Alphanumeric keys

(b) Numeric keys

(d) Cursor Control keys

(e) All of the above

7. A CRT monitor contains a____ 09503077

(a) Laser Head (b) Shadow mask

8. __________ key is used to exit from programs and task. 09503078

(a) Esc (b) ALT

9. _____________are much more expensive than printers: 09503079

(a) Flatbed Plotter

(b) Electrostatic Plotter

(d) All of these

10. ROM stands for _______: 09503080

(a) Read Only Memory

(b) Read-on-memory

(d) None is correct

11. _________ is a toggle key that, when activated, causes all alphabet characters to be uppercase: 09503081

(a) Alt key (b) Caps lock key

12. To input numbers into computer ___________ keys are used: 09503082

(a) Special keys (b) Numeric keys

13. _________ is an input device used for games, computer aided designs or simulations: 09503083

(a) Monitor

(b) Keyboard

(d) Scanner

14. ________ is a Pointing device. 09503084

(a) Joy Stick (b) Keyboard

15. ______ is a large scale printer: 09503085

(a) Plotter (b) Ink jet

16. __________ printers can print more than 5000 lines per minute: 09503086

(a) Ink Jet Printer

(b) Laser Printer

(d) Dot Matrix

17. CRT stands for _______: 09503087

(a) Cartridge Red Type

(b) Cathode Ray Terminal

(d) None of these

18. The primary colors are _____ 09503088

(a) Green, Red, Blue

(b) White, Red, Green

(d) Green, Red, Yellow

19. LCD stands for _______ 09503089

(a) Liquid crystal display

(b) Light coded display

(d) None of these

20. _____ is non-impact printer: 09503090

(a) Dot-Matrix Printer

(b) Laser Printer

d) All of these

21. VGA stands for _______. 09503091

(a) Graphic array

(b) Video Graphic Array

22. ______ Keys provide shortcuts for doing routine tasks on a computer. 09503092

(a) Function (b) Numeric

23. ___________ is an optical disk used to store digital data. 09503093

(a) Floppy disk (b) Hard disk

24. QWERTY is a ________. 09503094

(a) Layout (b) sequence

25. Scanner is an _____ device. 09503095

(a) Input (b) output

26. LASER stands for _______ 09503096

(a)Light Amplification by Stimulated

Emission of Radiation

(b) Radiation

(d) None of these

27. CD can store more than __________ MB of data. 09503097

(a) 700 (b) 500

28. CDRW stands for _______. 09503098

(a) Compact Disk Re-Writer

(b) Writer

(d) None of these

29. ________ Key enables the cursor to jump a couple of spaces. 09503099

(a) Esc (b) Tab

30. A _________ is the most commonly used input device that enables you to enter data into a computer. 09503100

(a) Mouse (b) Keyboard

31. Light pen is a (n) ____ device. 09503101

(a) Input (b) output

32. The resolution of monitor refers to the number of ____ on the screen. 09503102

(a) Picture (b) Pixels

33. ________ Monitors can display only one color. 09503103

(a) COLOR (b) Monochrome

34. SVGA stands for ______. 09503104

(a) Super Video Graphic Array

(b) Super Array

(d) Graphic

35. ___________ Keys are used to enter alphabets, numbers and other special characters into the computer. 09503105

(a) Function (b) Numeric

36. ________ Key moves the cursor to the left corner of the line or to the beginning of the page. 09503106

(a) End (b) Home

37. The smallest number of phosphorus dots that the gun can focus on is called 09503107

(a) Picture element (b) pixel

38. SVGA has resolution _____ 09503108

(a) 1024´1024 (b) 100´100

39. _________ click is used to view the properties of an object. 09503109

(a) Right (b) Left

40. VGA has resolution 09503110

(a) 1024´768 (b) 640´480

41. Arrow keys are also called: 09503111

(a) Toggle keys (b) Function keys

42. Which of the following device is used to get hard copy output? 09503112

(a) Speaker b) Keyboard

43. Which of the following is not a pointing device? 09503113

(a) Keyboard b) Mouse

44. Which mouse event is used to view the properties of an object: 09503114

(a) Left Click (b) Right Click

45. Number of buttons on joy stick are: 09503114

(a) One (b) Four

UNIT

STORAGE DEVICES

Q: 1 Describe in detail the purpose and working of the main memory. (Board 2012) 09504001

Q: 2 Describe in detail the purpose and working of the following secondary storage devices.

1: Floppy disk 2: Hard disk 09504002

Q: 3 Describe in detail the purpose and working of the backing storage devices.

1: Compact disk 2: Magnetic tape (Board 2012) 09504003

Q: 4 Explain using a labeled diagram, the concepts of track and sector when describing magnetic disk storage. 09504004

Q: 5 Explain the purpose of the following and draw diagram showing their relationship.

a) Cache Memory b) Hard Disk c) Magnetic Tape (Board 2011) 09504005

Q: 6 Explain why secondary memory is needed in a computer system. (Board 2015) 09504006

Q: 7 Explain the purpose of the following: (Board 2012) 09504007

I. High level formatting

II. Low level formatting

III. RAM and ROM

Q: 8 A 9^th class student has a home computer system. What storage devices, the student will use on the home computer system? Explain why these devices are needed. 09504008

Q: 9 What is main memory? Explain its types. (Board 2015) 09504009

Q: 10 Explain different types of ROM. (Board 2011) 09504010

Q: 11 Describe Memory Units of Computer. 09504011

Q: 12 Differentiate between Sequential Access and Direct Access Storage. 09504012

SHORT QUESTIONS

Q: 1 What is Computer storage? (Board 2002) 09504013

Q: 2 What is main memory? (Board 2016) 09504014

Q: 3 What is the purpose of main memory? 09504015

Q: 4 What is structure of main memory? 09504016

Q: 5 What is Random Access Memory (RAM)? (Board 2013) 09504017

Q: 6 How many types of operations can be performed by CPU on RAM? 09504018

Q: 7 What do you know about read and write operation? 09504019

Q: 8 What is the difference between DRAM and SRAM? (Board 2015) 09504020

Q: 9 Define cache Memory. (Board 2011) 09504021

Q: 10 What is address of byte? 09504022

Q: 11 What is Read Only Memory (ROM)? (Board 2010) 09504023

Q: 12 What is PROM? (Board 2016)09504024

Q: 13 What is EPROM? 09504025

Q: 14 What is EEPROM? 09504026

Q: 15 What is bit and nibble? 09504027

Q: 16 What is byte or character? (Board 2010) 09504028

Q: 17 What is MSB and LSB? 09504029

Q: 18 Write two advantages of secondary memory. (Board 2015) 09504030

Q: 19 What is the difference between sequential and random access? 09504031

Q: 20 What is the difference between primary and secondary memory? (Board 2012) 09504032

Q: 21 What is Floppy Disk? 09504033

Q: 22 What is the purpose of Floppy Disk? (Board 2014) 09504034

Q: 23: Write the sizes of floppy disk are there. (Board 2016) 09504035

Q: 24 What is the difference between hard drive and floppy drive? (Board 2013) 09504036

Q: 25 What is Hard Disk? (Board 2012) 09504037

Q: 26 What is data rate and seek time? (Board 2015) 09504038

Q: 27 Define tracks and sectors. 09504039

Q: 28 Describe low level and high level formatting. (Board 2016) 09504040

Q: 29 Define seek time. 09504041

Q: 30 Define rotational delay. 09504042

Q: 31 What is the transfer delay? 09504043

Q: 32 How do we calculate the access time of data in hard disk? 09504044

Q: 33 Define compact disk. (Board 2013) 09504045

Q: 34 Describe tape storage. 09504046

Q: 35 What is the purpose of parity bit in tape storage? 09504047

Q: 36 What is the purpose of inter block gaps in tape storage? 9504048

Q: 37 What is CD-R? (Board 2010) 09504049

Q: 38 What is performed by Hard Disk's Heads? (Board 2014) 09504050

Q: 39 How does access data in Direct Access Storage? (Board 2013) 09504051

Q: 40 Write a short note on Hard Disk performance and capacity.

(Board 2014) 09504052

MULTIPLE CHOICE QUESTIONS

1. 1 KB is equal to: 09504053

(a) 1000 bytes (b) 2¹⁰ Bytes

2. Types of memory are: 09504054

(a) 2 (b) 3

3. One kilo byte contains: 09504055

(a) 1024 MB (b) 1024 Byte

4. Typically a track is divided into ___________ sectors. 09504056

(a) 10 (b) 20

5. What is called a 4-bit sequence? 09504057

(a) Byte (b) Character

6. A_________ is binary number and has values 1 or 0 representing ON or OFF state.

(a) Bit (b) Byte 09504058

7. Each Byte contains how many characters.

(a) 1 (b) 2 09504059

8. The number of read/ write head for a hard disk of four platters is: 09504060

(a) 4 (b) 6

9. The larger the size of the RAM, the ________ the efficiency of the Computer.

09504061

(a) Increase (b) Decrease

10. EPROM stands for______. 09504062

(a) Only Memory

(b) Read only memory

Memory

(d) Programmable memory

11. MSB stands for_________. 09504063

(a) Most Significant Bit

(b) Significant

(d) All of these

12. Computer storage is divided into two main classes ______and 09504064

(a) Primary (b) Secondary

13. Access time = Seek time + ____ + Transfer Delay 09504065

(a) Rotational delay

(b) Transfer delay

(d) Acceleration

14. RAM stands for _______. 09504066

(a) Random Memory

(b) Random Access Memory

(d) Access memory

15. 1 MB is equal to _____ bytes. 09504067

(a) 1024 KB (b) 1024 bytes

16. The contents of __________ must be refreshed periodically. 09504068

(a) ROM (b) DRAM

17. The time required to move the head of the hard disk to appropriate track after reading the address is called: 09504069

(a) Transfer delay

(b) Rotational delay

(d) Seek time

18. __________ is a direct access storage device. 09504070

(a) Hard disk (b) Cassette

19. __________ is a serial access storage device. 09504071

(a) Hard disk (b) Floppy disk

20. 1 nibble =____________ bits. 09504072

(a) 8 (b) 16

21. 1 byte =____________ bits. 09504073

(a) 6 (b) 16

22. 1 kilo bytes =____________. 09504074

(a) 2⁴⁰ Bytes (b) 2¹⁰ Bytes

23. The bit at the left end is often called ______________. 09504075

(a) LSB (b) MSB

24. 1 Gigabytes=__________ 09504076

(a) 1020 bytes (b) 2¹⁰ Bytes

25. 1 terabytes =__________ 09504077

(a) 2⁴⁰ Bytes (b) 2¹⁰ Bytes

26. ____________ is an extension of the central processing unit (CPU) and is directly accessible to it. 09504078

(a) Hard disk (b) RAM

27. _________ is the old form of the mass storage device. 09504079

(a) Tape (b) RAM

28. Modern steaming tape systems divide a tape into _________ 09504080

(a) Segments (b) Parts

29. Data stored on the magnetic tape can be accessed only _____ 09504081

(a) Sequentially (b) Randomly

30. One of the most prominent optical storage system is the____ 09504082

(a) Compact disk (b) Hard disk

31. LSB stands for_________ 09504083

(a) Significant Bit (b) Last bit

32. ROM stands for _______ 09504084

(a) Read memory

(b) Read-Only Memory

(d) None of above

33. RAM stands for _______ 09504085

(a) Random Access Memory

(b) Read-Only Memory

(d) None of above

34. Which is a permanent memory of the computer designed by the manufacturers of the computers and cannot be alerted by the programmer? 09504086

(a) ROM (b) RAM

35. Which is a volatile memory? 09504087

(a) ROM (b) RAM

36. Which is a non-volatile memory? 09504088

(a) Hard disk (b) RAM

37. PROM stands for 09504089

(a) Programmable Read Only Memory

(b) Main memory

(d) Only Memory

38. EEPROM stands for . 09504090

(a) Electrically Erasable Programmable Read Only memory

(b) Main memory

(d) Volatile memory

39. Which is a secondary memory? 09504091

(a) Hard disk (b) RAM

40. Which is an example of primary memory? 09504092

(a) Hard disk (b) RAM

41. How many types of operations are performed by CPU on RAM? 09504093

(a) Three (b) RAM

42. During __________ operation the contents of memory location are copied to a CPU register. 09504094

(a) Read (b) Write

43. ______ is the number of Bytes per second that the drive can deliver to the CPU. 09504095

(a) Seek time (b) Data rate

44. During the process of ______ formatting, a drive marks the tracks and sectors on the disk. 09504096

(a) Low- level (b) High-level

45. When the head reaches the required track the read/ write head has to wait for some time, this is called _____ delay. 09504097

(a) Seek time (b) Data rate

46. When the appropriate sector comes under the read/write head, it reads the data from the disk and sends this data to the processor, this is called____ 09504098

(a) Transfer delay (b) Seek time

47. During _________ operation the contents of the CPU register are copied to the memory location. 09504099

(a) Read (b) Write

48. During the process of _____ formatting, the information about file-storage is written onto the file –allocation table. 09504100

(a) Low Level (b) High Level

49. Cache Memory is. 09504101

(a) Faster than the main memory

(b) Slower than the main memory

(d) Only (a) and (c)

50. Which is not an example of secondary storage? 09504102

(a) Floppy disk (b) Hard Disk

51. SRAM 09504103

(a) Contents are required to be refreshed

periodically

(b) Contents are not required to be

refreshed periodically

(d) Only (b) and (c)

52. Tape storage is: 09504104

(a) Slower than the hard disk

(b) Faster than hard disk

(d) All of above

53. Impact printers: 09504105

(a) Touch the surface of the paper

during printing process

(b) Don’t touch the surface of the

paper during printing process

(d) All of above

54. Which action involves positioning a read / write head over a track? 09504106

(a) Seek (b) Track

55. Which one is faster? 09504107

(a) RAM (b) Cash memory

56.The cells of memory are logically organized into group of. 09504108

(a) 24 bits (b) 12 bits

57. The diameter of compact disk (CD) is: 09504109

(a) 05 Inch (b) 04 Inch

NUMBER SYSTEMS

UNIT 5

Q.1. Explain the following: 09505001

a. Binary Number System b. Octal Number System c. Decimal Number System d. Hexadecimal Number System e. ASCII Codes f. BCD

Q.2. Explain following terms with examples: 09505002

a. Data b. Information

Q: 3 What are the main types of data used in different Computer applications? Explain the uses of each of the data types and the operation performed on it. (Board 2010) OR Explain types of Data. 09505003

Q:4 Explain the 1’s complement method of representing signed number. How can you perform subtraction using this method? (Board 2015) 09505004

Q: 5 Explain the 2’s complement method of representing signed number.

How can you perform subtraction using this method? (Board 2010) 09505005

Q.6. Convert the following decimal numbers into binary, octal and hexadecimal.

a. 78 b. 97 c. 129 09505006

Q.7. Convert the following hexadecimal numbers into binary, octal and decimal.

a. b. c. 09505007

Q8: Convert the following octal numbers into binary, decimal and hexadecimal: 09505008

a. 125 b. 57 c. 777

Q.9. Convert the following binary numbers into octal, decimal and hexadecimal.

a. b. c. 09505009

Q.10. Convert the following BCD numbers into Decimal

a. 00111001 b. 10000001 09505010

Q.11. Represent the following numbers as 8-bit 1’s complement and 10-bit 2’s complement numbers. 09505011

a. 76 b. -98 c. -126

Q.12. Represent the following numbers as 8-bit 1’s complement numbers into decimal. 09505012

a. 00101011 b. 10001001 c. 11111111

Q.13. Represent the following 8-bit 2’s complement numbers into decimal 09505013

a. 00111101 b. 11111111 c. 10101010

Q.14. Perform the following subtraction using 8-bit 1’s complement method. Verify your answer by converting it into decimal. All numbers are in decimal system. (Board 2007) 09505014

a. 57 – 126 b. 120 – 76 c. -20 – 52

Q.15. Perform the following subtraction using 8-bit 2’s complement method. Verify your answer by converting it into decimal. All numbers are in decimal system. 09505015

a. 127 – 126 b. 12 – 106 c. -12 – 25

Q:16 Perform the following subtraction using 8 bit 1’s and2’s complement method. Verify your answer by converting it into decimal. All numbers are in decimal system. Explain why the results are not correct if there is needed. 09505016

a. –57 – 96 b. -120 –110 c. 60 – 68

Q.17. Perform the following subtraction using 10 bit 1’s and 2’s complement method.

Verify the result by converting your answer into decimal. Explain why the results are not correct if there is needed. 09505017

a. -57 – 96

b. -120 – 110

c. -60 – 68

Q.18. What are the smallest and largest numbers that could be represented in 8 bits? 09505018

Q.19. What are the smallest and largest numbers that could be represented in 8-bit 1’s complement form? 09505019

Q.20. What are the smallest and largest numbers that could be represented in 8-bit 2’s complement form? 09505020

Q.21. Represent the following numbers using fixed-point representation. Use the following format for the conversion. Also verify your results by converting your results back into decimal. a. 25.5 b. 233.9 c. 33.6 09505021

Sign bit

Integral part

Fractional part

Q.22. Represent the following numbers using fixed-point representation. Use the format given in the previous question for the conversion. Explain if there is any trouble. 09505022

a. 1025.5 b. -1233.9 c. -2333.6

Q.23. Represent the following numbers using floating-point representation.

Use the floating-point format given in the chapter. 09505023

a. 1025.5 -1233.9 -2333.6

Q.24. Represent the following messages using the ASCII codes given in the table of ASCII codes. Also verify your coded message by converting it back into English. (Do not forget to convert the space character). 09505024

a. He is a good student b. 2 + 2 = 4

c. I like computer science d. Binary numbers are GREAT.

Q.25 What are computer codes? Explain its types (Board 2011) 09505025

Q.26 What is number system? Explain its types. (Board 2016) 09505026

Q.27 Write down some important rules about fix point representation. 09505027

Q.28 Write down some important rules about floating point representation. 09505028

Q.29 Explain the following with examples. 09505029

(i) Binary Addition (ii) Binary Subtraction (iii) Binary Multiplication

(iv) Binary Division

SHORT QUESTIONS

Q.1. What is the difference between data and information? (Board 2016) 09505030

Q.2. Describe types of data. 09505031

Q.3.What is number system? (Board 2015) 09505032

Q.4. Describe Binary Number System. (Board 2013) 09505033

Q.5. What is Decimal Number System? (Board 2012) 09505034

Q. 6. What is hexadecimal number system?

(Board 2015) 09505035

Q.7. What is Octal Number System? (Board 2015) 09505036

Q.8. How many methods of representing signed numbers in binary are these? 09505037

Q.9. What is meant by 1’s complement of any binary number? (Board 2016) 09505038

Q.10. How can a negative value be represented in 1’s complement form?09505039

Q.11. What is 2’s complement method? (Board 2016) 09505040

Q.12. How is a negative number represented using 2’s complement? 09505041

Q.13. How can we represent a real number in a computer using fixed point representation? 09505042

Q.14. What is the fixed-point representation? 09505043

Q.15. What is the Floating-point Representation? 09505044

Q.16 Write some important points about floating point representation. 09505045

Q.17. What is computer code? 09505046

Q.18. What is ASCII? (Board 2016) 09505047

Q.19. What is BCD? 09505048

Q.20. What is EBCDIC? 09505049

Q.21. What is Unicode?(Board 2015) 09505050

Q: 22 What is the expansion method? 09505051

Q: 23 What is the difference between LSD and MSD? 09505052

Q: 24 Convert 0.56 into binary. Give answer up to 6 decimals. (Board 2010) 09505053

Q: 25 Convert 56. 25₍₁₀₎into binary. 09505054

Q: 26 Convert 0.3₍₁₀₎into hexadecimal. 09505055

Q: 27 Convert 0.3₍₁₀₎ into octal. Give answer up to 5 decimal places. 09505056

Q: 28 Convert 185.3₍₁₀₎ into hexadecimal. (Board 2010) 09505057

Q: 29 Convert 0B9 ₍₁₆₎ into decimal. (Board 2012) 09505058

Q: 30 Convert A1.03 ₍₁₆₎ into binary. 09505059

Q.31. Convert 107₍₈₎ into Binary. 09505060

Q.32. Convert 107.52₍₈₎ into Binary. 09505061

Q.33. Convert 10010011₍₂₎ into octal. 09505062

Q.34. Convert 11010.11₍₂₎ into octal. 09505063

Q.35. Calculate 0110₍₂₎ x 1011₍₂₎. 09505064

Q.36. Calculate 01001101₍₂₎ ¸ 111₍₂₎09505065

Q.37. Calculate 01111001₍₂₎ ¸ 1011₍₂₎09505066

Q.38. Write down the table to demonstrate the position and weights of digits for the number 57231. 21 09505067

Q.39. Convert 27₍₁₀₎ into binary. (Board 2016) 09505068

Q.40. Why is Binary number system important for our computer? 09505069

Q.41.Describe the base or radix of a number system. (Board 2015) 09505070

Q: 42 Represent 23.6 in 16 bit fixed-point form using 10 bits for integral part. 09503071

Q:43 Represent -36.25 in 16-bit fixed-point form using 10 bits for integral part. 09503072

Q: 44. Convert the 16-bit fixed-point number 0100010111100100 into decimal where 10 bits are used for integral part

Q:45. Convert the 16-bit fixed-point number 1000110111.110000 into decimal where 10 bits are used for integer part.

09503074

Q: 46 Represent -117.125 as a 16-bit floating point number. 09503075

Q: 47. Represent -0.0001101001001₍₂₎ as a 16-bit floating point number. 09503076

Q: 48 Convert the following 16-bit floating point numbers into binary. 09503077

Q.49 Represent 17.5 as a 16-bit floating point number. 09503078

Q.50 Convert the following 16-bit floating point numbers into binary. 09503079

Sign bit	6 -bit Exponent						9-bit Mantissa
0	0	1	1	1	1	0		1	1	0	0	0	1	0	0	0

MULTIPLE CHOICE QUESTIONS

1. Processed data is called____. 09505080

(a) Alphabetic (b) Alphanumeric

2. Collections of facts and figures are called__________. 09505081

(a) Alphabetic data (b) Numeric data

3. Data and information may be represented in __________. 09505082

(a) Pictures (b) Graphs

4. Arithmetic can only be performed on _.

(a) Numeric data 09505083

(b) Alphanumeric data

(d) None of these

5. No arithmetic operation can be carried out on __________. 09505084

(a) Alphabetic data (b) Numeric data

6. _______ consists of numbers, alphabets, and special characters. 09505085

(a) Alphanumeric data

(b) Input

(d) None of these

7. ______ defines set the values used to represent different quantities. 09505086

(a) Number system

(b) Alphabetic system

(d) None of these

8. “%” sign falls in the category of _______ data. 09505087

(a) Alphabetic (b) Alphanumeric

9. “15” is an integer and 15.27 is __________. 09505088

(a) Also an integer (b) Real number

10. In a digital computer all kind of data is represented by ______. 09505089

(a) Decimal system

(b) Alphabets

(d) None of these

11. 179 will be considered in ____________ system. 09505090

(a) Binary (b) Decimal

12. 2⁰ = __________. 09505091

(a) 0 (b) 1

13. Decimal number system has ____ digits.

(a) 9 (b) 8 09505092

14. In decimal system 93 and 39 have different values, which shows that it is a _____. 09505093

(a) Positional number system

(b) Non-positional number system

(d) None of these

15. In decimal system positions have weight in powers of “10” Because we have. 09505094

(a) It for our convenience

(b) 9 digits in decimal system

(d) None of these

16. When a number is determined by multiplying the digits with the weight of their position and adding result. This Method is called _______. 09505095

(a) Expansion method

(b) Addition method

(d) Values assigned method

17. LSD stands for ________. 09505096

(a) Last significant digit

(b) Lost significant digit

(d) None of these

18. MSD stands for __________. 09505097

(a) Mere significant digit

(b) More significant digit

(d) None of these

19. We use power of “2” in the expansion of

09505098

(a) Binary system (b) Octal system.

20. In hexadecimal system C=_______ as his decimal. 09505099

(a) 10 (b) 11

21. System that uses only eight digits to represent numbers. 09505100

(a) Octal system

(b) Binary system

(d) None of these

22. Converting a value from decimal to binary, we will ____it by “2”. 09505101

(a) Divide (b) Multiply

23. 10.05 has __as its integral part. 09505102

(a) 05 (b) 10

24. Which of the following is incorrect?

(a) (b) 09505103

25. 1’s complement of binary number can be taken directly by: 09505104

(a) Replacing 0’s to 1’s and 1’s to0’s

(b) Expansion method

(d) None of these

26. 1’s complement method and 2’s complement method is used to represent__________. 09505105

(a) Signed numbers

(b) Unsigned numbers

(d) None of these

27. 1’s compliment of 001001011 is _______. 09505106

(a) 0110100 (b) 110110100

28. 1’s complement of +ve value is ____ as the usual binary number. 09505107

(a) Same (b) Opposite

29. 1’s complement of a –ve integer will always have a ____ in MSB. 09505108

(a) 0 (b) 1

30. 2’s complement of a binary number can be taken by taking. 1’s complement and adding __________ to it. 09505109

(a) 1 (b) 101

31. By using 1’s complement and 2’s complement method we can perform subtracting using ____ only. 09505110

(a) Addition (b) Multiplication

32. In binary multiplication 1.0 =___. 09505111

(a) 0 (b) -1

33. In fixed point representation of numbers the position of ___ is fixed. 09505112

(a) Decimal point (b) 0’s

34. To represent a real number in a computer __________ is used to represent sign of number. 09505113

(a) MSB (b) LSD

35. Characters “A” and “a” have __________ codes in ASCII. 09505114

(a) Same (b) Different

36. ASCII is a __________ bit coding scheme by (ISO). 09505115

(a) 7 (b) 10

37. Most computers use __________ bit ASCII code. 09505116

(a) 8 (b) 7

38. __________ is used to represent numeric data only. 09505117

(a) BCD (b) ASCII

39. To represent decimal system’s digit we need__________ bit code. 09505118

(a) 4 (b) 10

40. EBCDIC introduced by _____. 09505119

(a) Charles Babbage (b) ISO

41. EBCDIC is a __________ bit coding scheme. 09505120

(a) 8 (b) 10

42. ____ is 16 bit coding scheme. 09505121

(a) ASCII (b) BCD

43. The hexadecimal number (10)₁₆ equal to. 09505122

(a) 10(₁₀₎ (b) (100)₁₀

44. 2’s complement of 0101010₍₂₎ is 09505123

(a) 1010110₍₂₎ (b) (2 x 6)₁₀

45. 2’s complement of 0101010 is: 09505124

(a) 1010110 (b) 1010101

46. 1’s complement of a –ve binary number can be calculated by: 09505125

(a) Reversing the bits in numbers

(b) Reversing bits and adding 1

(d) Both (a) and (b)

47. (011) 4752105 is________ 09505126

(a) Numeric data

(b) Alphanumeric data

(d) Both (b) & (c)

48. The hexadecimal number 100₍₁₆₎ is equal to: 09505127

(a) 000100000000₍₂₎ (b) 256₍₁₀₎

49. Data is a collection of _______ 09505128

(a) Raw facts (b) Data

50. The octal equivalent of hexadecimal number 3DE is 09505129

(a) 1736 (b) 3176

51. Octal equivalent of binary number 1100010 is ` 09505130

(a) 141 (b) 153

52. 2's Complement of binary number 100010 is 09505131

(a) 010001 (b) 011110

53. How many types of data? 09505132

(a) 1 (b) 2

54. The binary equivalent of hexadecimal number 7BD is 09505133

(a) 11110111101

(b) 111010111101

(d) All of the above

55. The decimal equivalent of binary number 101011 is 09505134

(a) 42 (b) 40

56. The octal equivalent of binary number 111 is 09505135

(a) 81 (b) 7

57. One hexadecimal number is equivalent to _______ binary digits. 0950536

(a) Four (b) Three

58. The hexadecimal digits are 0 to 9 and A to ______ 09505137

(a) E (b) G

59. The base of a number system is equal to ________ of digits used in it. 09505138

(a) Number (b) Base

60. Each 0 and 1 in the binary system is called a ________ 09505139

(a) Byte (b) bit

61. The hexadecimal digits, A, C and F are equivalent to 10, 12 and _____ in the decimal system. 09505140

(a) 14 (b) 16

62. Each octal digit can be expressed using ____ binary digits. 09505141

(a) 3 (b) 2

63. The decimal equivalent of octal 56 is

(a) 36 (b) 46 09505142

64. 1's complement of a binary number 10111 is 09505143

(a) 10011 (b) 01000

65. (1001)₂ + (1101)₂ = ______. 09505144

(a) 11010` (b) 101011

66. The base of binary number is: 09505145

(a) 10 (b) 16

67. The base of Decimal number is: 09505146

(a) 10 (b) 2

68. The base of Hexadecimal number is:

(a) 2 (b) 8 09505147

69. The base of octal number is: 09505148

(a) 10 (b) 2

BOOLEAN ALGEBRA

UNIT 6

Q.1. State and prove the De Morgan’s laws for the Boolean algebra. (Board 2010) 09506001

Q2.If x and y are Boolean variables then prove the following identities by using truth table.

a. = b. x+(x.y)= x c. x.(x+y)=x d. x+1=1 e. x.0=0 09506002

Q3: Make truth table of the following functions. 09506003

a. f(x ,y)= x.y + .y

b. x . + . y

Q4. Calculate the value of the following Boolean functions at the given values of x, y and z.

a. .y + . + x. for x=0, y=1 and z=0 09506004

b. (+ y). x + (+z) for x=0, y=1, z=1

Q5. Prove the following results and apply the principal of duality to obtain the dual of these results. 09506005

(i) x + = 1 (ii) x+0 = x (iii) + x.y = + y (iv) . (y+ z)= (. y) + (. z)

Q6. Explain the following logic gates and show their function by using a truth table.

(Board 2010) 09506006

(a) AND (b) OR (c) NOT

Q7. Represent the following Boolean expressions as a combination of logic gates. 09506007

a. x . + . y

b. x . + .

c. + . y

Q8. Simplify the following Boolean functions using K-map. (Board 2015) 09506008

a. f (x, y) = x +. y

b. f (x, y, z) = .y. z + x . + . . z

c. f (x, y, z) = x . z + . z. y

Q9. Simplify using K-map. (Board 2012) 09506009

f (x, y, z) = x.y.+ .. + x.. + .y. z

Q10. Simplify using K-map. 09506010

f (x, y, z) =

Q11. Simplify the Boolean function. 09506011

Q12. Simplify the Boolean function. 09506012

Q13. Simplify the Boolean function. 09506013

Q14. Simplify the Boolean function. 09506014

Q15. Simplify the Boolean functions given below. 09506015

(a) f(x, y)=x + . y

(b) f(x, y, z)= .y .z +x. +..z

(c) f(x, y, z)= x.z + .z .y

Q: 16 Describe Minterms (Standard Product) and Maxterms (Standard Sum). ( Board 2015) 09506016

Q.17. Explain Boolean Algebraic laws. 09506017

Q18. Prove Idempotent law. (Board 2010) 09506018

a. x+x=x

b. x.x=x.

Q19. Prove Absorption law 09506019

a. x +x .y= x

b. x . x+y = x

Q.20: Simplify the Boolean function by using K- map f (x, y) = x. y +.y 09506020

Q.21. Simplify the Boolean function by using K- map 09506021

f(x, y, z) = x. y. +

SHORT QUESTIONS

Q1. What is Boolean algebra? (Board 2015) 09506022

Q2. What are Boolean constants and Boolean variables? (Board 2013) 09506023

Q3. What are propositions? (Board 2012) 09506024

Q4. What are logic gates? 09506025

Q5. What is Boolean expression? (Board 2016) 09506026

Q6. State the function of Truth Table. (Board 2015) 09506027

Q7. What is Boolean function? How many methods are there to simplify the Boolean function? (Board 2013) 09506028

Q:8. What is a duality principle? 09506029

Q: 9. Write down the disadvantages of Boolean algebraic laws. (Board 2012) 09506030

Q: 10. What is the Karnaugh Map? 09506031

Q: 11. What is the difference between serial circuit and parallel circuit? 09506032

Q.12. Prove x . 0 = 0. 09506033
Q.13: Prove involution or cancellation property. 09506034

Q.14: Write down some advantages of K-map method. (Board 2016) 09506035

Q.15: Write down some disadvantages of K-map method. (Board 2014) 09506036

Q.16. Evaluate

for and z = 0

(Board 2005) 09506037

Q.17: Evaluate (x + y) for x = 0, y =1 and z = 1. 09506038

Q.18. Prove x + 1 =1 (Board 2009) 09506039

Q.19. What is literal? (Board 2010) 09506040

Q.20 .Describe Associative Law w.r.t "Dot" and "Plus" (Board 2013) 09506041

Q.21 Draw truth table for OR operator Or OR gate. (Board 2016) 09506042

Q.22 Describe AND gate or AND operator. (Board 2016) 09506043

Q.23 Describe OR gate. 09506044

Q.24 Describe NOT gate. Or Define NOT operation. (Board 2015) 09506045

Q.25 What is De-Morgan's law? 09506046

Q.26 Describe Commutative Law w.r.t "Dot" and "Plus". 09506047

Q.27 Describe Distributive Law w.r.t "Dot" and "Plus". 09506048

Q.28 Describe Identity Law w.r.t "Dot" and "Plus". 09506049

Q.29 Describe Complement Law w.r.t "Dot" and "Plus". 09506050

MULTIPLE CHOICE QUESTIONS

1. K-Map is used to: 09506051

(a) Evaluate Boolean Expression

(b) Simplify Boolean Expression

(d) None of the above

2. Demorgan’s Law states that: 09506052

(a) a .(b+c) = a.b + a.c

(b) a+(b+c) = (a+b)+c

(c)

(d) a.b=b.a

3. A Boolean Function with 4 variables

will have ______. 09506053

(a) 16 maxterms (b) 8 maxterms

4. The idempotent law states that for two variables ‘x’ and ‘y’. 09506054

(a) x+x.y = x and x.(x+y) = x

(b) x

(d) x+1

5. The absorption law states that for two variables ‘x’ and ‘y’. 09506055

(a) x.x = x and y.y = y

(b) x .y=y . x

(d) x/x=x If ‘x’ is a

6. If x is a Boolean variable then 09506056

(a) x+1 = 0 (b) x+ 1 = 1

7. x.x = x, is known as; 09506057

(a) Absorption Law

(b) Idempotent law

(d) De Morgan’s law

8. AND operation needs at least; 09506058

(a) One input (b) Two inputs

9. Boolean Algebra was formulated by; 09506059

(a) George Boole

(b) Charles Babbage

(d) Hollerith

10. The negation of A = 0 will be 09506060

(a) A = 1 (b) = 1

11. In Boolean algebra ‘AND’ Operation is denoted by. 09506061

(a) . (b) *

12. In Boolean algebra ‘OR’ operation is denoted by. 09506062

(a) * (b) /

13. If a,b,c are three variables then their associative property. 09506063

(a) a+(b+c) = (a+b)+c

(b) a.(b.c) = (a.b).c

(d) both (a) and (b)

14. The ‘.’ operation is distributive over __________. 09506064

(a) + (b) .

15. If ‘x’ is a Boolean variable then

x+= _______. 09506065

(a) 1 (b) 0

16. Involution law states 09506066

(a) x.x =x (b) x.y = x +y

17. x + x = ____________ 09506067

(a) x (b) 1

18. x .0 = ___________. 09506068

(a) 1 (b) x

19. A Boolean variable can have _________ possible values. 09506069

(a) Only two values (b) - Values

20. In a Boolean expression, first of all we evaluate _________. 09506070

(a) +

(b) .

(d) Division

21. In a Boolean operation, secondly we evaluate: 09506071

(a) + (If no parenthesis)

(b) . (If no Parenthesis)

(d) None is correct

22. If x = 0, y = 1, z = 0, then the solution of x.y + x.z + y. is _____. 09506072

(a) 1 (b) 0

23. The solution of x.y + x.y is __________ if x = 0, y = 0 09506073

(a) 0 (b) 1

24. If ‘x’ is a Boolean variable then ___________. 09506074

(a) x + x = x (b) x + x = 1

25. If ‘x’ is a Boolean variable then
x+ x = ___________ 09506075

(a) x (b)

26. If ‘x’ and ‘y’ are Boolean variables then __________. 09506076

(a) x + (x.y) = x (b) x + x.y = y

27. We can simplify a Boolean function by

(a) Using laws of Boolean algebra

(b) Using K-map 09506077

(d) Both (a) and (b) are correct

28. K-map method is introduced by 09506078

(a) Maurice Karnaugh

(b) George Boole

(d) None is correct

29. If we have ‘n’ Boolean variables then total maxterm will be: 09506079

(a) 2 (b) 2ⁿ

30. If we have ‘3’ Boolean variables then we will have _______ minters. 09506080

(a) 8 (b) 16

31. While solving a Boolean function by K-map method, we make group of _______ adjacent 1’s. 09506081

(a) 2 or 4 (b) 1 or 3

32. In Boolean algebra plus sign stands for _______ operation. 09506082

(a) OR (b) AND

33. Double complementation has _______ effect. 09506083

(a) Addition (b) Division

34. In Boolean algebra 1 + 0 + 0 is equal to __________ 09506084

(a) 0 (b) 11

35. A inverter is called a ____ gate. 09506085

(a) AND (b) NAND

36. In an inverter gate the output state is always ______ of the input state. 09506086

(a) Union (b) Opposite

Computer software

UNIT 7

Q: 1 Describe (a) System software and (b) Application software. 09507001

Q: 2 What is DOS? How is it different from Windows? (Board 2013) 09507002

Q: 3 How many types of commands are available in DOS? Discuss briefly. (Board 2011) 09507003

Q: 4 What is a language translator? Describe its types briefly. (Board 2011) 09507004

Q:5 What are switches and wild card? Discuss their uses in DOS with examples. 09507005

Q: 6 Define operating system. List important functions of operating system. (Board 2010) 09507006

Q: 7 What is the difference between .com and .exe files? (Board 2012) 09507007

Q: 8 What is a directory, a volume label, and drive name? 09507008

Q: 9 How do you launch the command processor under Windows XP? 09507009

Q: 10 Describe the following terms: 09507010

a) PATH

b) Parent Directory:

c) Subdirectory:

Q: 11 How do you? 09507011

a) List all text files in subdirectory b:\reports\

b) List all files with name accounts under directory A:

Q: 12 Suppose you are working in directory C:\testdirectory. How would you perform the following? 09507012

(i) Create a new directory named user.

(ii) Change directory to C: by changing to parent directory twice.

(iii) Delete file named sample3.doc under the test directory.

(iv) Remove the test directory after deleting files sample2.txt and sample3.doc.

Q:13 Write DOS commands: 09507013

(i) To view current date.

(ii) Change date to new date 2004-06-25

(iii) Change date back to 2004-06-16 in one statement.

Q: 14 Take listing of: 09507014

(a) All files under test directory when you are under C:\

(b) List all files of name sample under the test directory.

(c) Listing of all files of extension .doc under the test directory.

Q: 15: Write DOS commands to erase. 09507015

(i) Sample.doc file under C:\

(ii) Sample4.doc file under test directory

(iii) All files under test directory

Q: 16 Make “testdirecotry2” under subdirectory “test directory” when you are under C:\

09507016

Q: 17 Explain the following commands. 09507017

(i) FORMAT

(ii) EXIT

(iii) FIND

(iv) PAUSE

(v) PRINT

Q: 18 Change prompt to (a) Current time (b) Version number (c) Default drive
(d) > Character (e) < Character 09507018

Q: 19 Write down the procedure for writing autoexec.bat file. 09507019

Q: 20 Explain SORT and SYS commands. 09507020

Q: 21 Explain TYPE, VOLUME and XCOPY commands. 09507021

Q: 22 Explain types of DOS files. 09507022

Q: 23 Explain COPY commands. 09507023

Q: 24 Describe PROMPT command. 09507024

Q: 25 Write a note on operating system. 09507025

Q: 26 Explain switches and wildcard with DIR command. 09507026

Q.27 Explain ATTRIB command with Examples. 09507027

SHORT QUESTIONS

Q: 1 What is DOS? (Board 2010) 09507028

Q: 2 Define DOS internal command. (Board 2014) 09507029

Q: 3 Define External DOS commands. (Board 2015) 09507030

Q: 4 What is the purpose of CLS and DIR commands? (Board 2016) 09507031

Q: 5 Define DATE and TIME commands.

09507032

Q: 6 Define VER and VOL commands. (Board 2015) 09507033

Q: 7 Define TYPE command. 09507034

Q: 8 What is the purpose of Copy command. 09507035

Q: 9 What is the purpose of DEL command. 09507036

Q: 10 What is the purpose of MKDIR (MD) command. (Board 2016) 09507037

Q: 11 What does CD Command do? (Board 2013) 09507038

Q: 12 What is the purpose of RMDIR (RD) command. (Board 2015) 09507039

Q: 13 What is the purpose of PROMPT command? 09507040

Q: 14 What is the purpose of CHKDSK command? 09507041

Q: 15 What is the purpose of FORMAT command? (Board 2014) 09507042

Q: 16 What is the purpose of DISKCOPY command. (Board 2010) 09507043

Q: 17 What is the purpose of FDISK command. 09507044

Q: 18 What is the purpose of TREE command? (Board 2015) 09507045

Q: 19 What is the purpose of XCOPY command? 09507046

Q: 20 What is the purpose of PATH command? 09507047

Q: 21 What is software? 09507048

Q: 22 Define System Software. 09507049

Q: 23 What is application software? 09507050

Q: 24 What is operating system? (Board 2015) 09507051

Q: 25 Name the types of operating system. (Board 2013) 09507052

Q: 26 List the functions of an operating system. (Board 2014) 09507053

Q: 27 Define command line and graphical user interface. (Board 2016) 09507054

Q: 28 What is assembler? 09507055

Q: 29 Define compiler and interpreter.

09507056

Q: 30 What is a PROGRAM? (Board 2016) 09507057

Q: 31 Describe the major tasks performed by DOS. 09507058

Q: 32 How many types of DOS files are there? 09507059

Q: 33 Define batch files. 09507060

Q: 34 What is the purpose of ATTRIB command? 09507061

Q: 35 What is the purpose of a EDIT command? 09507062

Q: 36 What are switches and wild card? (Board 2014) 09507063

Q: 37 Define user interface. (Board 2014) 09507064

Q: 38 What is the difference between source code and object code? (Board 2016) 09507065

Q: 39 How does DOS organize Data? Or What is a drive name? (Board 2016) 09507066

Q: 40 What do you mean by DOS Interface? 09507067

Q: 41 What is the use of executable file? (Board 2015) 09507068

Q:42 Define Parent Directory and subdirectory. 09507069

MULTIPLE CHOICE QUESTIONS

1. XCOPY 09507070

(a) Can copy subfolders as well

(b) Is an external command

(d) None of these

2. Windows 09507071

(a) Has a GUI

(b) Is not an operating system

3. Interpreter translates: 09507072

(a) The assembly language program line

by line

(b) The source program line by line

(d) None of the above

4. Dir? Lass. * Command____ 09507073

(a) Will list all files whose last four

characters are lass with any extension.

(b) Will list all files starting with any

character and with any extension.

with any character but last four

characters are lass.

(d) None of the above.

5. RMDIR command 09507074

(a) Makes directory

(b) Remove directory

(d) none of the above

6. Prompt command 09507075

(a) Confirms deletion of a file

(b) Changes prompt

(d) Clear screen

7. Dir *. * 09507076

(a) Lists all files of extension .doc

(b) Lists all files

(d) All of these

8. Compiler 09507077

(a) Converts a high level program into a

machine program

(b) Converts a low level program into

a machine program

(d) None of above

9. Dir/p 09507078

(a) Displays the directory page wise

(b) Displays the directory width wise

(d) Display name of directory

10. DISKCOPY 09507079

(a) Is an internal command

(b) Is an external command

(d) Is a file

11. TREE command is used to 09507080

(a) Display the folder structure of a

drive or path

(b) Specify/view the directories MS-

OS should search for files

(d) None of the above

12. Which command is used to make copy of the floppy disk? 09507081

(a) COPY (b) DISKCOPY

13. Which command is used to transfer the hidden MS-DOS system files? 09507082

(a) SYS (b) DISKCOPY

14. Which command is used to change the appearance of the command prompt? 09507083

(a) DEL (b) Appearance

15. Which convert high-level program into a machine code? 09507084

(a) Compiler (b) Interpreter

16. Which provides the command line interface to the users? 09507085

(a) Windows (b) DOS

17. Which is an external DOS command?

(a) CLS (b) DIR 09507086

18. Which is an internal command? 09507087

(a) CHKDSK (b) XCOPY

19. Which switch is used with FORMAT command to unconditionally format a drive? 09507088

(a) /s (b) /u

20. CHKDSK is a ___DOS command. 09507089

(a) Internal (b) External

21. Which command displays one screen of directory list at a time? 09507090

(a) /p (b) /w

22. Which software created to perform a specific task for user? 09507091

(a) System (b) Application

23. Which can be used to make a file read-only? 09507092

(a) –R (b) +R

24. How many types of software are there?

(a) Two (b) Three 09507093

25. Which software control, monitor, or facilitate the use of Computer? 09507094

(a) Application (b) System

26. Which translate assembly language into machine language? 09507095

(a) Compiler (b) Interpreter

27. Program written in high level language is called: 09507096

(a) Source program (b) Object code

28. The output of language translator is called: 09507097

(a) Object code (b) Source program

29. DOS was designed by: 09507098

(a) IBM (b) Intel

30. Which command is used to display the volume label and serial number of a disk?

(a) TREE (b) VOL 09507099

31. Which command is used to display the folder structure of a drive or path? 09507100

(a) RD (b) VOL

32. Which is an example of operating system? 09507101

(a) DOS (b) MS Windows

33. How many types of DOS commands?09507102

(a) Two (b) Three

34. How many types of DOS files? 09507103

(a) Two (b) Three

35. Internal commands are stored in: 09507104

(a) Command.com file

(b) Batch file

(d) System file

36. Which command is used to create directory or subdirectory? 09507105

(a) RD (b) MD

37. Which command is used to display the contents of a text file on the screen? 09507106

(a) TYPE (b) EXIT

38. Which command delete empty directory?

(a) RD (b) MD 09507107

39. GUI stands for _________. 09507108

(a) User interface

(b) Graphical User Interface

(d) None of these

40. Which command is used to make copies of existing files? 09507109

(a) DISKCOPY (b) MD

41. Which command is used to display the date? 09507110

(a) Time (b) DATE

42. Which is a program that translates a source program into machine code as a whole? 09507111

(a) Assembler (b) Compiler

43. Which looks at each line of the source program, decides what that line means, checks it for possible errors and then executes that line? 09507112

(a) Interpreter (b) Compiler

44. Which is a single user operating system? (a) LAN (b) WAN 09507113

45. IBM stands for _________. 09507114

(a) International Machine

(b) International business

(d) All of these

46. Which command is used to delete the files from the disk? 09507115

(a) RD (b) DEL

47. Which command is used to display the time? 09507116

(a) DATE (b) TIME

48. In ____interface the users communicate with the OS by selecting commands from menus or by selecting icons by using pointing device like mouse. 09507117

(a) CLI (b) GUI

49. Which is a program that converts an assembly language program into machine instructions? 09507118

(a) Interpreter (b) Compiler

50. DOS divides the secondary storage of the computer into logical areas called: 09507119

(a) Folder (b) Directory

51. Which command is used to display a list of the files and subdirectories that are in the directory? 09507120

(a) DIR (b) CLS

52. Which switch is used with PROMPT command to show current time? 09507121

(a) $T (b) $L

53. Which command is used to display the MS-DOS version number? 09507122

(a) VER (b) version

54. Which command is used to change present working directory? 09507123

(a) CD (b) MD

55. Which command creates a new root directory and file allocation table for the disk?

(a) FORMAT (b) RD 09507124

56. Which command is used to delete the whole directory even if the directory is not empty? 09507125

(a) CD (b) RD

57. Which command is used to check the status of a disk and to fix errors on the disk? 09507126

(a) FORMAT (b) RD

58. Which command is used to specify/view the directories MS-DOS should search for executable files? 09507127

(a) FORMAT (b) RD

59. How many Wild Cards are used in DOS? 09507128

(a) 1 (b) 2

60. Normally, floppy drive is labeled as:

(a) A:\ (b) F:\ 09507129

61 How many types of language translators are there? 09507130

(a) 1 (b) 2

INTRODUCTION TO WINDOWS

UNIT 8

Q 1: Briefly explain the following: 09508001

a. Drives b. Folder (Directories) c. File Extensions d. Icon

Q 2: Name and explain three different features of Windows. (Board 2010) 09508002

Ans:

Q 3: What is start button and taskbar? (Board 2011) 09508003

Q 4: Write the steps needed to start a program. (Board 2010) 09508004

Q: 5: What are the steps for shutting down and restarting Windows? 09508005

Q: 6 What is Windows Explorer? How can we start Windows Explorer? 09508006

Q: 7 What is the use of recycle bin? 09508007

Q: 8 What is “Control Panel”? Explain different options of control panels and tasks performed by them. (Board 2010) 09508008

Q: 9 Write a note on computer virus. (Board 2012) 09508009

Q: 10 What are the benefits of using anti-virus programs? (Board 2011) 09508010

Q: 11 What is mouse? Describe mouse events or actions. 09508011

Q: 12 How would you Copy a File /Folder from floppy disk to another disk? 09508012

Q: 13 What is an Icon? Explain its types. 09508013

Q: 14 What is a Windows? Describe different Windows Controls. (Board 2014) 09508014

Q: 15 Write down the steps to rename, delete the folder and empty the recycle bin. 09508015

Q16. How would you arrange Desktop icon? 09508016

Q17. How would switch between applications on the taskbar and show clock on the taskbar?

09508017

Q18. How would you change Desktop background and change Screen saver. 09508018

SHORT QUESTIONS

Q: 1 Define Windows Operating System. (Board 2013) 09508019

Q: 2 What is Disk drive? (Board 2016) 09508020

Q: 3 What are folders (Directory)? (Board 2015) 09508021

Q: 4 Define file extension. (Board 2012) 09508022

Q: 5 Why is extension used with file? (Board 2013) 09508023

Q: 6 Define Icons. (Board 2012) 09508024

Q: 7 What is My Computer Icon? 09508025

Q: 8 What is the purpose of Recycle Bin? (Board 2013) 09508026

Q: 9 What is the purpose of My Document icon? 09508027

Q: 10 State the purpose of Internet Explorer. (Board 2014) 09508028

Q: 11 Describe Graphical User Interface. (Board 2016) 09508029

Q: 12 Why do we use Windows Explorer? (Board 2015) 09508030

Q: 13 What do you know about shortcuts? 09508031

Q: 14 Define multitasking. (Board 2010) 09508032

Q: 15 Define Easy Internet Access feature of Windows. 09508033

Q: 16 What do you know about MSN? 09508034

Q: 17 Define Gaming platform features of Windows. (Board 2014) 09508035

Q: 18 What do you know about hardware compatibility? 09508036

Q: 19 What do you know about plug and play? 09508037

Q: 20 Define Search Utility. 09508038

Q: 21 Define Help feature of Windows. (Board 2015) 09508039

Q:22 Define Windows Desktop. 09508040

Q:23 What is start button (Board 2016) 09508041

Q:24 What is taskbar? (Board 2009) 09508042

Q:25 Write down the steps to open a recently used document. 09508043

Q:26 What is the procedure of creating new folder? (Board 2016) 09508044

Q:27 How do we delete a file/ folder?

Ans: 09508045

Q:28 How would you change desktop background? 09508046

Q:29 How would you change screen saver?

09508047

Q:30 Write down the steps to search/ find files in windows. (Board 2014) 09508048

Q:31 Define title bar. 09508049

Q:32 Define computer virus. (Board 2012) 09508050

Q:33 Why is antivirus program used? (Board 2015)09508051

Q:34 What is the control panel.

(Board 2016) 095080452

Q:35 Describe fonts option in Control Panel. (Board 2015) 09508053

Q:36 How does a computer get a virus? (Board 2016) 09508054

MULTIPLE CHOICE QUESTIONS

1. ____ is the gateway of accessing most of the functionality available in the computer loaded with Windows. 09508055

(a) Folders (b) Start button

2. Control panel allows you to customize which of the following features? 09508056

(a) Appearances (b) Themes

(e) All of the above

3. Computer virus is simply a: 09508057

(a) Disease

(b) Set of computer instructions or

computer code

(d) Hardware component

(e) None of the above

4. Klez is: 09508058

(a) Game name

(b) Hardware component

(d) Person name

(e) None of these

5. Good Times was a: 09508059

(a) Virus (b) Anti virus

of virus

(d) None of these

6. Windows provides us: 09508060

(a) Graphical User Interface

(b) Command Line Interface

(d) None of these

7. Which establish a link with original program? 09508061

(a) Folders (b) Shortcuts

8. Which is extension of Hypertext Document? 09508062

(a) .txt (b) .htm

9. Which allows you to customize features of your PC? 09508063

(a) Desktop (b) Control panel

10. Only members of the ___________ can use tools for making policies and advanced functions. 09508064

(a) Working (b) Start button

11. ___ are the ending letters, which are places after a DOT in the file name. 09508065

(a) File Name (b) File Extension

12. ________ enables a user to see easily what is in the computer. 09508066

(a) Internet explorer

(b) My Computer

(d) None of these

13. Which is the extension of sound file?

(a) .txt (b) .htm 09508067

14. When an object is deleted Windows send it to: 09508068

(a) My Briefcase (b) Recycle Bin

15. Which is extension of Microsoft Word Document? 09508069

(a) .ppt (b) .xls

16. Which is extension of Microsoft Excel Document? 09508070

(a) .txt (b) .htm

17. Which is extension of Microsoft PowerPoint Presentation? 09508071

(a) .ppt (b) .doc

18. Which is extension of Microsoft Access Database? 09508072

(a) .mdb (b) .htm

19. Which is extension of Windows Bitmap Picture? 09508073

(a) .bmp (b) .mdb

20. Which allows the user to activate and accomplish more than one task at a time?

(a) Multitasking (b) Shortcuts 09508074 (c) Both (a) and (b) (d) None of these

21. Windows dominate the personal computer world, running almost on ____ % of all personal computers. 09508075

(a) 60 (b) 40

22. When you delete an object, Windows send it to the __________ 09508076

(a) My computer (b) Recycle bin

23. Which acts as a directory browser and File manager for Windows? 09508077

(a) Windows explorer

(b) Recycle bin

(d) Folder

24. Which can seriously damage the computer system? 09508078

(a) Computer virus (b) Recycle bin

25. Which is software that is used to remove the viruses from the system? 09508079

(a) My computer (b) Antivirus

26. To add or remove hardware, you must select an option from _____. 09508080

(a) My computer (b) Control panel

27. The colored area on the screen, which contains small pictures or graphic objects, a bar at the bottom with start button and other things on it is called _____ 09508081

(a) My Computer (b) Recycle bin

28. Which screen is divided into 2 panes?

09508082

(a) My computer (b) Recycle bin

29. A program designed to protect software from viruses is called: 09508083

(a) Program (b) Software

30. A bar located at the top of a Windows, containing the name of the application, current topic or current document is called ________.

09508084

(a) Title bar (b) Recycle bin

31. Which is used to organize the data stored on your drives? 09508085

(a) File (b) Folder

32. A folder is a: 09508086

(a) Collection of files

(b) Collection of data

(d) Collection of Programmes

33. Windows is the most popular product of ......... 09508087

(a) Sun Systems (b) Microsoft

34. ........ is a graphic image: 09508088

(a) Menu (b) Desk top

Causative

9th Computer Science Full book

Q7. Represent the following Boolean expressions as a combination of logic gates. 09506007

Q15. Simplify the Boolean functions given below. 09506015

Q: 1 Describe (a) System software and (b) Application software. 09507001

Q: 2 What is DOS? How is it different from Windows? (Board 2013) 09507002

Q: 7 What is the difference between .com and .exe files? (Board 2012) 09507007

Q: 8 What is a directory, a volume label, and drive name? 09507008

Q: 9 How do you launch the command processor under Windows XP? 09507009

Q: 11 How do you? 09507011

Q: 4 What is the purpose of CLS and DIR commands? (Board 2016) 09507031

Q: 9 What is the purpose of DEL command. 09507036

Q 2: Name and explain three different features of Windows. (Board 2010) 09508002

Q 3: What is start button and taskbar? (Board 2011) 09508003

Q 4: Write the steps needed to start a program. (Board 2010) 09508004

Q: 5: What are the steps for shutting down and restarting Windows? 09508005

Q: 6 What is Windows Explorer? How can we start Windows Explorer? 09508006

Q:29 How would you change screen saver?

Q:31 Define title bar. 09508049

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