Categories of Computers.

Computers are  classified on the basis of  size  speed , processing power  and Price. However the classification of computers are not very straight forward .The distinction between theses  categories is sometimes not very clear. Some categories overlap different categories.

Computers can be divided into the following categories:-

1. Microcomputer or personal Computer.

2.Mini Computer

3.Main-frame Computer

4.Super Computer

5.Embedded Computer 

Storage and Communication Devices.

Storage Devices:-

The hardware component used to store Data,Instructions and Information permanently are Normally Called as Storage Devices.

It is also called Non-Volatile because its contents remain safe when computer is turned off.
Some Important Storage Devices are Floppy disk, Zip drive, Hard disk, Usb drive, Memory cards, CD-Rom, CD+RW, and DVD+RW drives.

Communication Devices:-

The Hardware component used to communicate and exchange Data,Instructions, and information with other computer are called Communications Devices.

An important communication Device is called Modem.

It Enables the computer to communicate with other computers through Telephone line or cable.