BIOS

Gennaro avatar. By: Gennaro
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Home » Vocabulary » Thing » BIOS

In IBM PC compatible computers, the Basic Input/Output System (BIOS), also known as the system BIOS or ROM BIOS, is a de facto standard defining a firmware interface. The name originated from the Basic Input Output System used in the CP/M operating system (released in 1976). The BIOS software is built into the PC, and is the first software run by a PC when powered on. The name originates from the Basic Input/Output System used in the CP/M operating system in 1975. Originally proprietary to the IBM PC, the BIOS has been reverse engineered by companies looking to create compatible systems. The interface of that original system serves as a de facto standard.

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