Short for basic input output system. The part of the operating system that handles the input and output of the computer. It enables the operating system to use the particular features of the hardware being used. The name specifically refers to a single part of some operating systems which can be easily altered to allow the same operating system to be used by a variety of hardware designs and manufacturers. If the BIOS is altered, the other parts of these operating systems will not need any alteration.

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   operating systems