🧠 Chapter 1: Introduction to Computers – 200 MCQs with Answers
1. A computer is an electronic device that is used to
A. Store data
B. Process data
C. Both A and B
D. None of these
Answer: C
2. The term “computer” is derived from which language?
A. Latin
B. Greek
C. French
D. Arabic
Answer: A
3. The word “computer” originally means
A. To calculate
B. To compute
C. To tabulate
D. To program
Answer: B
4. The main function of a computer is to
A. Perform calculations
B. Store large amounts of data
C. Process data into information
D. All of the above
Answer: D
5. Which of the following is not a characteristic of a computer?
A. Accuracy
B. Intelligence
C. Speed
D. Storage
Answer: B
6. A computer cannot function without
A. Monitor
B. Keyboard
C. Software
D. Printer
Answer: C
7. Which of the following is the brain of the computer?
A. CPU
B. ALU
C. Memory
D. Control Unit
Answer: A
8. CPU stands for
A. Central Processing Unit
B. Central Program Unit
C. Control Processing Unit
D. Central Peripheral Unit
Answer: A
9. The main components of the CPU are
A. ALU and CU
B. ALU and Memory
C. CU and Registers
D. None of these
Answer: A
10. ALU stands for
A. Arithmetic Logic Unit
B. Application Logic Unit
C. Arithmetic Level Unit
D. None of these
Answer: A
11. The Control Unit manages
A. Input operations only
B. Output operations only
C. All operations of a computer
D. Memory only
Answer: C
12. The data that is processed by the computer is called
A. Input
B. Output
C. Software
D. Hardware
Answer: B
13. Computers can only understand
A. High-level language
B. Assembly language
C. Machine language
D. Natural language
Answer: C
14. The smallest unit of data in a computer is
A. Bit
B. Byte
C. Nibble
D. Word
Answer: A
15. One byte equals
A. 4 bits
B. 8 bits
C. 16 bits
D. 2 bits
Answer: B
16. Which among the following is hardware?
A. Monitor
B. Windows
C. MS Word
D. Linux
Answer: A
17. Which among the following is software?
A. Keyboard
B. Hard Disk
C. Operating System
D. CPU
Answer: C
18. Hardware and software together make a
A. Program
B. Computer system
C. Network
D. File
Answer: B
19. The physical parts of a computer are called
A. Hardware
B. Software
C. Firmware
D. Shareware
Answer: A
20. The set of instructions that tells the computer what to do is
A. Hardware
B. Software
C. Data
D. Peripheral
Answer: B
21. Input devices include
A. Keyboard and Mouse
B. Monitor and Printer
C. CPU and Memory
D. Hard Disk and RAM
Answer: A
22. Output devices include
A. Scanner and Keyboard
B. Monitor and Printer
C. CPU and Mouse
D. None of these
Answer: B
23. A device used to enter data into a computer is called
A. Output device
B. Input device
C. Storage device
D. None of these
Answer: B
24. A computer mouse is an example of
A. Input device
B. Output device
C. Storage device
D. None
Answer: A
25. The device that displays information is
A. CPU
B. Monitor
C. Keyboard
D. Scanner
Answer: B
26. Which of the following is not an input device?
A. Scanner
B. Keyboard
C. Printer
D. Mouse
Answer: C
27. Which of the following is a storage device?
A. Hard Disk
B. RAM
C. Pen Drive
D. All of these
Answer: D
28. RAM stands for
A. Random Access Memory
B. Read Access Memory
C. Ready Access Memory
D. None
Answer: A
29. ROM stands for
A. Read Only Memory
B. Random Only Memory
C. Read Once Memory
D. None
Answer: A
30. Which memory is volatile?
A. ROM
B. RAM
C. Hard Disk
D. CD-ROM
Answer: B
31. Which memory is non-volatile?
A. RAM
B. Cache
C. ROM
D. Registers
Answer: C
32. The unit of measurement of computer memory is
A. Meter
B. Bit
C. Byte
D. Hertz
Answer: C
33. 1 KB equals
A. 100 bytes
B. 512 bytes
C. 1024 bytes
D. 1000 bytes
Answer: C
34. The operating system is a type of
A. Application software
B. System software
C. Utility software
D. Firmware
Answer: B
35. MS Windows is an example of
A. Application software
B. System software
C. Programming language
D. None
Answer: B
36. MS Word is an example of
A. System software
B. Application software
C. Hardware
D. Utility
Answer: B
37. A computer cannot work without
A. Operating system
B. Internet
C. Printer
D. UPS
Answer: A
38. The first mechanical computer was designed by
A. Charles Babbage
B. Alan Turing
C. Bill Gates
D. John von Neumann
Answer: A
39. Charles Babbage is known as the
A. Father of Computers
B. Father of Internet
C. Father of Programming
D. Father of Electronics
Answer: A
40. The first generation of computers used
A. Transistors
B. Vacuum Tubes
C. ICs
D. Microprocessors
Answer: B
41. The second generation of computers used
A. Vacuum tubes
B. Transistors
C. Integrated Circuits
D. Microprocessors
Answer: B
42. The third generation of computers used
A. Vacuum tubes
B. Transistors
C. Integrated Circuits (ICs)
D. Microprocessors
Answer: C
43. The fourth generation of computers used
A. Microprocessors
B. Transistors
C. Integrated Circuits
D. Artificial Intelligence
Answer: A
44. The fifth generation of computers is based on
A. Artificial Intelligence
B. Vacuum Tubes
C. IC Chips
D. Transistors
Answer: A
45. The first microprocessor was developed by
A. Intel
B. IBM
C. Microsoft
D. Apple
Answer: A
46. The first microprocessor was
A. Intel 4004
B. Intel 8085
C. Intel 8086
D. Pentium
Answer: A
47. The first generation computers were programmed using
A. Machine language
B. Assembly language
C. High-level language
D. Binary codes
Answer: A
48. Which of the following is the smallest and fastest memory?
A. Cache
B. RAM
C. Hard Disk
D. ROM
Answer: A
49. The main storage unit in a computer is
A. CPU
B. RAM
C. ROM
D. Hard Disk
Answer: D
50. The process of converting data into information is called
A. Processing
B. Input
C. Output
D. Storage
Answer: A
51. The main circuit board of a computer is called
A. Motherboard
B. CPU
C. ALU
D. Hard Disk
Answer: A
52. Which component performs all logical and arithmetic operations?
A. ALU
B. CU
C. RAM
D. ROM
Answer: A
53. Which of the following is an example of system software?
A. MS Word
B. Windows
C. Tally
D. Photoshop
Answer: B
54. The device used to store large amounts of data permanently is
A. RAM
B. ROM
C. Hard Disk
D. Cache
Answer: C
55. The most common input device is
A. Keyboard
B. Printer
C. Monitor
D. Hard Disk
Answer: A
56. Which of the following is an output device?
A. Mouse
B. Keyboard
C. Printer
D. Scanner
Answer: C
57. Which key is used to delete a character to the left of the cursor?
A. Delete
B. Backspace
C. Shift
D. Enter
Answer: B
58. The full form of GUI is
A. Graphical User Interface
B. General User Interface
C. Graphical Universal Interface
D. Guided User Interaction
Answer: A
59. Which part of the computer performs calculations and makes decisions?
A. CPU
B. ALU
C. Control Unit
D. Memory
Answer: B
60. A collection of 4 bits is called a
A. Byte
B. Nibble
C. Word
D. Bit
Answer: B
61. The binary system uses which numbers?
A. 0 and 9
B. 1 and 2
C. 0 and 1
D. 1 and 10
Answer: C
62. Which language is closest to human language?
A. Machine language
B. Assembly language
C. High-level language
D. Binary
Answer: C
63. Compiler converts
A. Machine code to source code
B. Source code to machine code
C. Assembly code to binary
D. Binary to assembly
Answer: B
64. Which of the following is not an operating system?
A. Linux
B. Windows
C. MS Word
D. macOS
Answer: C
65. Which among the following is an example of open-source software?
A. Linux
B. Windows
C. macOS
D. MS Office
Answer: A
66. Which of the following is a portable computer?
A. Desktop
B. Mainframe
C. Laptop
D. Supercomputer
Answer: C
67. The largest and most powerful computer is
A. Supercomputer
B. Mainframe
C. Mini computer
D. Microcomputer
Answer: A
68. Which computer is used for weather forecasting?
A. Microcomputer
B. Supercomputer
C. Mini computer
D. Laptop
Answer: B
69. A small computer that fits on a desk is called a
A. Mainframe
B. Mini computer
C. Microcomputer
D. Supercomputer
Answer: C
70. Data and instructions are stored in the
A. Memory
B. ALU
C. CU
D. Output unit
Answer: A
71. The full form of BIOS is
A. Basic Input Output System
B. Binary Input Output System
C. Basic Integrated Output Setup
D. None
Answer: A
72. Which of the following is not an example of hardware?
A. Mouse
B. Keyboard
C. MS Excel
D. CPU
Answer: C
73. The term “bit” stands for
A. Binary digit
B. Binary information
C. Binary code
D. Binary integer
Answer: A
74. The first computer programmer was
A. Ada Lovelace
B. Charles Babbage
C. John Napier
D. Alan Turing
Answer: A
75. A group of 1024 bytes is called
A. Kilobyte
B. Megabyte
C. Gigabyte
D. Bit
Answer: A
76. A program that translates high-level language to machine language is called
A. Compiler
B. Interpreter
C. Assembler
D. Translator
Answer: A
77. The device that converts digital signals to analog and vice versa is
A. Modem
B. Router
C. Hub
D. Switch
Answer: A
78. Which type of computer is used by many users simultaneously?
A. Personal computer
B. Mainframe computer
C. Mini computer
D. Supercomputer
Answer: B
79. Which unit converts data into human-readable form?
A. Input unit
B. Output unit
C. Control unit
D. Memory
Answer: B
80. A printed output from a computer is known as
A. Soft copy
B. Hard copy
C. File
D. Document
Answer: B
81. The device that scans text or images into a computer is
A. Scanner
B. Printer
C. Monitor
D. Speaker
Answer: A
82. A group of interconnected computers is called a
A. Network
B. Internet
C. Link
D. System
Answer: A
83. The Internet is an example of a
A. LAN
B. WAN
C. MAN
D. PAN
Answer: B
84. The smallest computer network is a
A. LAN
B. WAN
C. MAN
D. PAN
Answer: D
85. Full form of LAN is
A. Local Area Network
B. Large Area Network
C. Long Area Network
D. Linked Area Network
Answer: A
86. The first electronic computer was named
A. ENIAC
B. UNIVAC
C. EDVAC
D. MARK-I
Answer: A
87. Which storage device uses laser technology?
A. CD-ROM
B. Hard Disk
C. Pen Drive
D. Floppy Disk
Answer: A
88. Which among the following is an optical storage device?
A. DVD
B. Floppy Disk
C. Pen Drive
D. Hard Disk
Answer: A
89. The full form of ASCII is
A. American Standard Code for Information Interchange
B. American System Code for Information Interface
C. Advanced Standard Code for Information Interchange
D. None
Answer: A
90. The computer that can perform millions of instructions per second is
A. Supercomputer
B. Mainframe
C. Mini computer
D. Microcomputer
Answer: A
91. The term “booting” means
A. Installing software
B. Starting up the computer
C. Shutting down the computer
D. Formatting
Answer: B
92. The main function of an operating system is
A. Managing resources
B. Editing documents
C. Creating graphics
D. Running applications
Answer: A
93. The process of copying files to a safe location is called
A. Backup
B. Restore
C. Formatting
D. Saving
Answer: A
94. Which memory stores data temporarily when a computer is on?
A. RAM
B. ROM
C. Hard Disk
D. CD
Answer: A
95. The full form of USB is
A. Universal Serial Bus
B. Universal System Bus
C. Uniform Serial Base
D. United Serial Bus
Answer: A
96. The part of the CPU that coordinates all activities is
A. ALU
B. CU
C. Memory
D. Bus
Answer: B
97. The main storage device used in computers today is
A. Hard Disk
B. Floppy Disk
C. CD
D. Tape Drive
Answer: A
98. A computer connected to the Internet is identified by
A. IP Address
B. MAC Address
C. URL
D. Domain
Answer: A
99. Which of the following is an example of application software?
A. MS Excel
B. Linux
C. Windows
D. BIOS
Answer: A
100. The combination of hardware and software is known as
A. Computer System
B. Operating System
C. Application
D. Network
Answer: A
101. Which device is used to convert sound waves into electrical signals?
A. Speaker
B. Microphone
C. Modem
D. Scanner
Answer: B
102. Which key is used to move the cursor to the beginning of a line?
A. End
B. Home
C. Page Up
D. Insert
Answer: B
103. The device that connects computers in a network is called a
A. Modem
B. Hub
C. Router
D. Bridge
Answer: C
104. The first high-level programming language was
A. FORTRAN
B. COBOL
C. BASIC
D. C
Answer: A
105. FORTRAN was mainly used for
A. Business applications
B. Scientific calculations
C. Web designing
D. Database management
Answer: B
106. Which device is used to take a hard copy of a document?
A. Printer
B. Monitor
C. Scanner
D. Keyboard
Answer: A
107. Which key combination is used to paste data?
A. Ctrl + C
B. Ctrl + X
C. Ctrl + V
D. Ctrl + P
Answer: C
108. The smallest unit of information in a computer is
A. Byte
B. Bit
C. Nibble
D. Word
Answer: B
109. The collection of 8 bits is called
A. Byte
B. Word
C. Nibble
D. Block
Answer: A
110. Which among the following is a volatile memory?
A. Hard Disk
B. RAM
C. ROM
D. Pen Drive
Answer: B
111. The output displayed on the screen is called
A. Soft Copy
B. Hard Copy
C. Document
D. File
Answer: A
112. Which of the following is a pointing device?
A. Keyboard
B. Joystick
C. Monitor
D. Printer
Answer: B
113. A combination of hardware and software that enables communication is called
A. Network
B. Protocol
C. Internet
D. Interface
Answer: D
114. The first computer virus was known as
A. Brain
B. Creeper
C. Melissa
D. ILOVEYOU
Answer: B
115. Which device is required for Internet connection?
A. Modem
B. Router
C. Hub
D. Switch
Answer: A
116. Which computer part holds programs and data that are currently in use?
A. ROM
B. Hard Disk
C. RAM
D. Cache
Answer: C
117. The device that interprets and executes instructions is
A. Monitor
B. CPU
C. Keyboard
D. Printer
Answer: B
118. The full form of HTML is
A. HyperText Markup Language
B. Hyper Transfer Markup Language
C. HighText Machine Language
D. None
Answer: A
119. The Internet works on which principle?
A. Circuit switching
B. Packet switching
C. Message switching
D. Channel switching
Answer: B
120. Which among the following is a search engine?
A. Yahoo
B. Chrome
C. Firefox
D. Outlook
Answer: A
121. The shortcut key to select all text is
A. Ctrl + C
B. Ctrl + V
C. Ctrl + A
D. Ctrl + S
Answer: C
122. The process of loading an operating system into memory is called
A. Installing
B. Booting
C. Formatting
D. Saving
Answer: B
123. Which of the following is used for long-term storage?
A. RAM
B. Hard Disk
C. Cache
D. Register
Answer: B
124. The full form of HTTP is
A. Hyper Text Transfer Protocol
B. High Text Transfer Protocol
C. Hyper Terminal Transfer Program
D. None
Answer: A
125. Which part of the computer displays the result?
A. CPU
B. Output unit
C. Input unit
D. ALU
Answer: B
126. The process of finding and fixing errors in software is called
A. Compiling
B. Debugging
C. Testing
D. Running
Answer: B
127. The main memory of the computer is also called
A. Primary memory
B. Secondary memory
C. Cache
D. Virtual memory
Answer: A
128. A web address is also called a
A. URL
B. IP address
C. Domain
D. Protocol
Answer: A
129. Which part of the computer stores BIOS?
A. RAM
B. ROM
C. Cache
D. Hard Disk
Answer: B
130. The full form of PDF is
A. Portable Document Format
B. Public Document File
C. Portable Data File
D. Programmed Data Format
Answer: A
131. The process of transferring files from a computer to the Internet is
A. Downloading
B. Uploading
C. Sharing
D. Copying
Answer: B
132. A device that can both input and output data is
A. Modem
B. Scanner
C. Printer
D. Monitor
Answer: A
133. The smallest addressable unit in computer memory is
A. Byte
B. Word
C. Bit
D. Nibble
Answer: C
134. Which of the following is a non-volatile storage device?
A. RAM
B. Cache
C. ROM
D. Registers
Answer: C
135. Which one is a web browser?
A. Google
B. Chrome
C. Yahoo
D. Bing
Answer: B
136. The full form of DNS is
A. Domain Name System
B. Data Network Service
C. Digital Naming System
D. Domain Number Service
Answer: A
137. The device used for playing sound is
A. Microphone
B. Speaker
C. Modem
D. Headphone
Answer: B
138. The full form of ICT is
A. Information and Communication Technology
B. Internet and Computer Technology
C. Information and Coding Technology
D. Integrated Communication Technology
Answer: A
139. The shortcut key for “Save” is
A. Ctrl + C
B. Ctrl + V
C. Ctrl + S
D. Ctrl + P
Answer: C
140. A software used to access websites is called
A. Operating System
B. Browser
C. Server
D. Compiler
Answer: B
141. The Internet was first developed by
A. ARPANET
B. NASA
C. Microsoft
D. Intel
Answer: A
142. Which memory is used to store frequently used data?
A. RAM
B. Cache
C. Hard Disk
D. CD
Answer: B
143. The operating system acts as
A. An interface between user and hardware
B. A hardware device
C. An output device
D. None
Answer: A
144. A collection of related data is called a
A. File
B. Folder
C. Database
D. Record
Answer: C
145. Binary number system uses base
A. 2
B. 8
C. 10
D. 16
Answer: A
146. Which among these is an example of an optical disk?
A. CD
B. DVD
C. Blu-ray
D. All of these
Answer: D
147. The full form of IP is
A. Internet Protocol
B. Internal Process
C. Information Port
D. Inter Process
Answer: A
148. The shortcut key for “Copy” is
A. Ctrl + C
B. Ctrl + X
C. Ctrl + V
D. Ctrl + Z
Answer: A
149. The full form of URL is
A. Uniform Resource Locator
B. Universal Reference Link
C. Uniform Reference Locator
D. None
Answer: A
150. Which part of a computer performs calculations?
A. ALU
B. CU
C. RAM
D. ROM
Answer: A