4th class Computer Lesson No.1 Test

Subject:-                       Computer 

Time 50min                Class 4th 

Qno.1. What is a computer system?

Qno.2. Who is known as the Father of disk drive?

Qno.3. What is the function of CPU?

Qno.4. Differentiate between the following:

a) Input devices and Output devices. 

b) Primary memory and Secondary memory.