Explanation

Comprehensive passage 

The computer is an electronic device. It takes instructions from the user. The first computer was invented in about 1942. It works like a human brain but its memory is much more than that of a human brain. The computer is a fast device. It can perform a large number of calculations in a few seconds. Communication is possible within seconds anywhere in the world. Information technology is possible only due to computers. Computers are needed in almost every field of life and are playing 

When was the computer invented?

A. In 1932

B. In 1942

C. In 1946

D. In 1952

 What does the term CPU stand for?

A. Central Processing Unit

B. Central Progressing Unit

C. Central Proposing Unit

D. Chief Processing Unit

What is the function of key board?

A. To show data

B. To give prints of the documents

C. Give instructions to the computer for processing

D. none of the above

Which is the following is part of a computer?

A. Motherboard 

B. Processer

C, Ram

D. Keyboard