Page 7 - Computer - 3

1 1 How Computer Works
How Computer Works

Pre-Processing

• How a Computer Works? • The IPO Cycle

• Central Processing Unit (CPU)

A computer is a useful electronic machine. It is used in almost every sphere of life.

It works very fast and accurately. It can work for an extended period of time without
getting tired or fatigue. It can also store a large amount of data and do many jobs at
the same time.

A computer has various components in it which work together to perform tasks. Let
us learn how a computer does its work.

HOW A COMPUTER WORKS?

A computer is a machine. Like any other machine, it follows certain steps to perform
a task. A machine accepts some input from the user, processes it according to the

instructions, and returns the result as output.
Consider the example of making orange juice using a juicer. This is done in three

steps.
Step 1: We put peeled oranges in the juicer. This is Input.

Step 2: The juicer crushes the oranges. This is Process.

Step 3: The juice is squeezed out. This is Output.

5