Page 15 - Computer Class 04

Computer is an electronic machine. It runs on electricity. It takes inputs
from the user. It uses some program (set of instructions) to process these

inputs. Finally, it delivers outputs as per your requirements. It can also store
your data. You can retrieve this data later on.

Computer works on a method which is:

Input Process Output

8 Input means to take in the information. Devices which help the

computer to take in information are called input devices . For

example– keyboard, mouse, scanner etc.
8 Then, computer examines and calculates them. This is called

processing.
8 And then, it gives out the result accordingly. Devices which show the

result are called output devices . For example—, monitor, speakers,

printer etc.

An Input Device A Processing Device An Output Device

Computer comprises of different parts which are connected with one another. Each
part of computer plays very important role whenever we use a computer.

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