CBSE Class 4 Computers Solve Puzzle Worksheet

I. MULTIPLE CHOISE QUESTIONS:

1. Which unit is responsible for converting the data received from the user into a computer understandable format?
a) Memory Unit
b) Arithmetic & Logic Unit
c) Input Unit
d) Output Unit
Answer: c

2. The only language which the computer understands is ______________
a) Assembly Language
b) Binary Language
c) BASIC
d) C Language
Answer: b

3. The smallest unit of data in computer is ________________
a) Byte
b) Nibble
c) Bit
d) KB
Answer: c

4. One nibble is equivalent to how many bits?
a) 2
b) 4
c) 8
d) 1
Answer: b

5. The input machine which originated in the United States around 1880s is a ___________
a) Mouse
b) Joystick
c) Keyboard
d) Bar Code Reader
Answer: c

6. Which of the following is not a function of the Input Unit?
a) It reads instructions and data from the outside world
b) It converts the data into computer acceptable format
c) It makes the data into user understandable format
d) It supplies the data and instructions to the computer for further processing
Answer: c

7. Label the parts 1 and 2:
a) 1.ALU 2. MU
b) 1.Output unit 2.Input Unit
c) 1.MU 2. ALU
d) 1.Input Unit 2.Output Unit
Answer: d

8. The process of producing useful information for the user is called ___________
a) Controlling
b) Outputting
c) Inputting
d) Processing
Answer: b

9. The output unit converts the data entered by the user into computer understandable form.
a) True
b) False
Answer: b

10. VDU stands for __________
a) Virtual Display Unit
b) Visual Display Unit
c) Virtual Detection Unit
d) Visual Detection Unit
Answer: b

II. FILL IN THE BLANKS:

1. A CRT monitor looks like a television and are normally used with non-portable computer systems.

2. Output Unit supplies the data and instructions to the computer for further processing.

3. PCI stands for Peripheral Component Interconnect

4. The two basic types of memory in a computer are Primary and Secondary.

5. Primary Storage is used to hold running program instructions?

6. LCD monitors are thinner and lighter than CRT Monitors.

7. The LASER printer uses laser beams and dry ink to print the output on paper.

8. A TOUCH SCREEN is a computer screen, which is sensitive to the touch.

9. A CPU is the BRAIN of a computer where it processes and stores the information.

10. A . SCANNER copies the text and pictures directly into the computer.