a compact and relatively inexpensive computer, with less capacity and capability than a minicomputer, consisting of a microprocessor and other components of a computer, miniaturized where possible: used in small business, by hobbyists, etc.

1970–75; micro- + computer

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World English Dictionary
microcomputer (ˈmaɪkrəʊkəmˈpjuːtə)
Sometimes shortened to: micro a small computer in which the central processing unit is contained in one or more silicon chips

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1971, from micro- + computer.
Online Etymology Dictionary, © 2010 Douglas Harper
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Computing Dictionary

microcomputer definition

A computer based on a microprocessor.
Contrast with minicomputer, mainframe.

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
The microcomputer and the mainframe computer are contrasted for those researchers who have a choice of where to process data.
Microcomputer statistical packages tend to have less flexibility but are easier for the novice to use.
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