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On the basis of brand, computer has two world wide brands:
It stands for International Business Machine Personal Computer and developed by IBM Company. It is commonly known as the IBM PC. IBM Company is the first company that manufactured computer. It was founded by a team of engineers and designers. It has given the new technology on the basis of Charles Babbage principal.
Original IBM PC, XT and AT.
The term compatible means 'Able to exist together and successfully'. IBM compatible computer system is assembled form of different components developed by different companies. It is based on IBM principle that can use standard hardware and software designed for the IBM PC and its own additional features.
IBM PC compatible computers are those generally similar to the original IBM PC, XT, and AT.
Computers developed by Apple Industry are apple computers. This used a standard microprocessor chips. The chip enabled them to put together a complete computer, a keyboard for input, and processors in memory and screen all in small box.
Apple II is known as personal computer. IBM PC and its compatible version have largest scope in PC market. Most of the users of the world have IBM PC than these computers but Apple has its own users, mostly people interested in graphic works, documentation and publishing sectors.
On the basis of Model, computer is classified as:
On the basis of brand computer are classified as:
|IBM Personal Computers||IBM compatible computers|
|a. They are originally manufactured by
IBM company USA.
|a. They are duplicate to IBM and
manufactured by local companies with
permission of IBM Company.
|b. They are comparatively more expensive.||b. They are comparatively cheaper.|
|c. They use genuine & original software.||c. They use genuine and pirated software
|d. They are more reliable.||d. They are less reliable.|
|IBM computers||Apple computers|
|a. These computers use both GUI and CUI
|a. These computers use only GUI
|b. Mouse is optional to these computers.||b. Mouse is compulsory to these
|c. They are manufactured by IBM
|c. They are manufactured by Apple
|d. They are cheaper than apple computers.||d. They are more expensive than IBM
Computers are classified into models in following ways:
a. Extended (XT) model
b. Advance technology (AT) model
c. PS/2 (personal system2) model.