Page 20 - 00inner.cdr

WORKING OF A COMPUTER

In the same way, a computer also works in these three basic steps:

1. Input

2. Process Input

3. Output Process

It is known as the IPO cycle (Input-Process-Output).
Output
Input

We need to enter letters, numbers or any other information into the computer to

make it work. These are called data .

The data and instructions entered into the computer together called input . Input
to the computer is usually given by clicking the mouse or typing on the

keyboard.

The input devices are used to send information to the computer. Some of the

input devices are as follows :

Keyboard Mouse Scanner

Process

The process of changing the entered data into

meaningful information is called processing .

The CPU works on data according to the instructions to

give the result. The CPU is also known as the processing
device.

Output

The final result or meaningful information is called output . When the CPU
finishes processing the data, the output is displayed on the monitor. Output from

the computer may be images on the monitor or printouts from the printer.

The output devices allow us to receive information from the computer.

20