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1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   microcomputer \microcomputer\ n.
      A small computer based on a microprocessor; in practise, at
      any given time in the technology of computer development, a
      microcomputer will be one that is less powerful than a
      minicomputer.
      Syn: personal computer, PC.
           [WordNet 1.5]