CLASSIFICATION.

Computer can be classified in two ways.
-By Purpose
-By Size

BY PURPOSE:
According to purpose computers are classified as under:
-General Purpose Computers.
-Special Purpose Computers.

-GENERAL PURPOSE COMPUTERS:
General purpose computers are those that can store different programs and can be used for countless applications.
The versatility of a general purpose computer is limited by human imagination.
  
-SPECIAL PURPOSE COMPUTERS:
Special purpose computers are those that are designated to perform only one specific task.
Program or instruction set is permanently stored in such a machine.
Although it lacks versatility.It does its single task quickly and efficiently.

BY SIZE:
According to the size computers are classified into the following four categories.
-MICRO COMPUTER.
-MINI COMPUTER.
-MACRO COMPUTER.
-SUPER COMPUTER.