Classification of Computer On the Basis of Brand and Model

On the basis of brand

On the basis of brand, computer has two world wide brands:

IBM PC:

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.

Example
Original IBM PC, XT and AT.

IBM compatible:

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.

Example
IBM PC compatible computers are those generally similar to the original IBM PC, XT, and AT.

Apple computer:

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

On the basis of Model, computer is classified as:

• XT Computer (Extra Technology): It cannot support GUI based operating system. Its processing speed is 4.77 MHz and Intel 8080, 8086, 8088 series of microprocessors is used.
• AT Computer (Advance Technology): It supports GUI based operating systems. Its speed is 2 GHz and word length 64 bits. Its processors are Intel series of 80286, 80386, Pentium II etc.
• PS/2 Computer: It is a laptop computer which is rechargeable and battery based system. It is operated with OS/2 operating system.

Things to remember

• IBM PC,IBM compatibles, apple computers are top branded computers.
• It stands for International Business Machine Personal Computer and developed by IBM Company.
• IBM compatible computer system is assembled form of different components developed by different companies.
• Computers developed by Apple Industry are apple computers.

• It includes every relationship which established among the people.
• There can be more than one community in a society. Community smaller than society.
• It is a network of social relationships which cannot see or touched.
• common interests and common objectives are not necessary for society.

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