Classification of Computers

Computers can be classified on basis of design, usage and size. Classification is detailed as

Super Computer

Super computer is the most powerful computer in world, which is used for solving complex problems. They use parallel processing. A super computer has multiple processors (100 or more) fitted inside. It is used mainly in spaceship control, defense and meteorological departments. Scientists build their complex processes and simulate them on supercomputers. PARAM is an example of such computer, which is made in India by C-DAC. CRAY, USA also makes super computer.

Mainframe Computer

They are used where large number of computers (100+) needs frequent access to the information. The mainframe computers are big in size and require big room for installation. HP 9000, IBM es/9000 are examples of same.

Mini Computer

These computers are comparatively smaller than mainframe. These computers are used as servers with many computers (usually less than 100) connected to them. The computers are used by Banks, and Data Processing Centers. E.g. PDP-11, IBM As/400.

Personal Computer

PC’s are most popular computers in today’s world

• It is used for various purposes like office management, education designing etc.
• They are smaller in size and can be placed on table
• They are available with microprocessor chips, manufactured by Intel or AMD

Some of other common computers types are

Notebook computer

It can fit easily inside a briefcase or bag. Laptops can operate on plug – in current or with in-built batteries. Laptops with small screen (10”) are called netbook and are also low in price.

Personal Digital Assistant

They are the smallest of portable computers. They are used for small operations like displaying telephone numbers.

Workstation

The most powerful PC’s, which are used by engineers, scientists and graphic artist, are known as workstations.

Home Computer

They are PC’s used in homes for entertainment and computational purposes.