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Wednesday, 16 December 2015

Information Technology

What is a computer?
A computer is an electronic device under the control of instructions stored in its memory. The computer is capable of receiving information (data) in a particular form and performing a sequence of operations.
A computer can:
  • accept data (input)
  • manipulate data (processing) 
  • produce results (output)
  • store data for future use (storage)
Types of computers
Microprocessor
Microcomputer
Minicomputer
Mainframe Computer
Supercomputer

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