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Friday, 13 April 2012

Modern Computers

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Computers can be generally classified by size and power as follows, though there is considerable overlap:
  • personal computer: a small, single-user computer based on a microprocessor. In addition to the microprocessor, a personal computer has a keyboard for entering data, a monitor for displaying information, and a storage device for saving data.
  • workstation: a powerful, single-user computer. A workstation is like a personal computer, but it has a more powerful microprocessor and a higher-quality monitor.
  • minicomputer: a multi-user computer capable of supporting from 10 to hundreds of users simultaneously.
  • mainframe: a powerful multi-user computer capable of supporting many hundreds or thousands of users simultaneously.
  • supercomputer: an extremely fast computer that can perform hundreds of millions of instructions per second.

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