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Standard:4 CH-01 Introduction to Computers
Multiple Choice Question (Page No: 8)
Choose the correct option for given questions:
1. ..................... devices are used to display the result
A. Input
B. Output
C. Processing
2. Input devices are used to enter .................. into the computer.
A. Data
B. Food
C. Icons
3. Subtracting two numbers is ....................
A. Input
B. Processing
C. Output
Answer: 1-B, 2-A, 3-B
Exercise (Page No: 11)
Section A: Multiple Choice Questions
1. The result you get after processing is the ...................
A. Input
B. Process
C. Output
2. .................. is used to play games on the computer.
A. Scanner
B. Joystick
C. Printer
3. .................. gives the result on paper.
A. Printer
B. Scanner
C. Monitor
4. All internal parts of computer including CPU are attached to ..................
A. Hard Disk
B. RAM
C. Motherboard
Section B: Write full form of the following
CPU: Central Processing Unit
ALU: Arithmetic and Logic Unit
CU: Control Unit
MU: Memory Unit
RAM: Random Access Memory
Section C: Quiz
1. Name the two types of memory.
Answer: The two types of memory are the Primary memory and Secondary memory.
2. Which device is also called as a flash drive?
Answer: Pen drive is also called as a flash drive.
Section D: Very Short Answer Questions.
1. What is the difference between primary memory and secondary memory?
Answer: Primary memory is the internal memory of the computer, while the secondary memory is the external memory of the computer.
2. Write two examples for each of the following:
(A) Input devices i) Keyboard ii) Mouse
(B) Output devices i) Monitor ii) Printer
(C) Storage devices i) Hard Disk ii) CD
Section D: Short Answer Questions.
1. What is a printer? Also name the three types of printer.
Answer: Printer helps us to take the result on paper. Three types of printers are: i) Dot Matrix ii) Inkjet iii) Laser
2. What is hard disk?
Answer: Hard disk is a secondary storage device which stores all the data and software.
Section D: Very Short Answer Questions.
1. What is secondary memory? Explain any two secondary storage devices.
Answer: Secondary memory is used to store data permanently. The two secondary storage devices are as below:
(i) Hard disk: It is fixed inside the CPU box and stores all the data and software.
(ii) Pen drive: It is a portable device and has a large capacity to store data.
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