- central processing unit: the key component of a computer system, which contains the circuitry necessary to interpret and execute program instructions.
Origin of CPU
First recorded in 1965–70
Also called central processor, microprocessor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- central processing unit
Word Origin and History for cpu
by 1970, abbreviation of central processing unit.
Online Etymology Dictionary, © 2010 Douglas Harper
- Abbreviation of central processing unit
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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.