BIOS

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BIOS

 (bī′ōs)
n.
The set of routines stored in read-only memory that enable a computer to start the operating system and to communicate with the various devices in the system, such as disk drives, keyboard, monitor, printer, and communications ports.

[b(asic) i(nput/)o(utput) s(ystem).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

BIOS

acronym for
(Computer Science) Basic Input Output System: the built-in software which controls the primary functions of a PC
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

BIOS

(ˈbaɪ oʊs)
n.
computer firmware that directs many basic functions of the operating system.
[B(asic) I(nput)/O(utput) S(ystem)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.