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central processing unit
cen·tral pro·cess·ing u·nit (plural cen·tral pro·cess·ing u·nits)


noun 
Definition:
 
main part of computer: the part of a computer that performs operations and executes software commands
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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