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Classification of Computer on the basis of Brand and Model

Overview :  IBM PC, IBM Compatibles, Apple Computers are the top brand of computers. This note has brief explanation on different types of computers divided according to brand and model.

             Classification of Computer on the basis of Brand and Model

                         On the Basis of Brand :

                                          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 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 graphics 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 (Advanced 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.