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BIOS

[ bahy-ohs ]
/ ˈbaɪ oʊs /
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noun Computers.
computer firmware that directs many basic functions of the operating system, as booting and keyboard control.
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Origin of BIOS

First recorded in 1975–80; abbreviation of B(asic) I(nput)/O(utput) S(ystem)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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