Introduction:

Computer is an electronic device use to compute the things. It is a programmed device used to perform high speed operations. There are two main parts of computer

1- Computer Hardware is the physical parts of computer.

2-Computer Software that tell the computer what to do.

Input Devices:

devices which take input from user called input devices e.g keyboard, joystick, mouse etc.

Output Devices:

devices which produce output are called output devices e.g

monitor , speaker , printer etc.

Parts of Computer:

There are four main parts of computer

1- Central Processing Unit (CPU)

2- Monitor

3- Keyboard

4- Mouse

Q-How Computer Works?

Ans:Computer works in three steps

1-User input required command.

2-CPU process on it.

3-Then shows the output on display.

 

Next page:

-Types of Computer Systems

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