BIOS

(ōs′)

Comput. basic input/output system

See BIOS in American Heritage Dictionary 4

noun
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.

Origin:

Origin: b(asic) i(nput/)o(utput) s(ystem)

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