By type, computers are classified as follows:
(a) Analogue (b) Digital and (c) Hybrid.
A. Analogue Computers:
These are computers that operate on data in the form of continuous variable physical quantity like the temperature, pressure and voltage. The value changes continuously.
B. Digital Computers:
This type of computer process data in discrete forms. They use binary numbers like 0 and 1 to represent information. It gives the exact values of data without approximations. Examples are digital watches, digital meters, digital calculators etc.
This type combines the attributes of the analogue and digital computers. It functions both with continuous and discrete forms. Examples are electronic calculating scales used in food store.