Definition: An abbreviation for Basic Input/Output System. On PC-compatible systems, the BIOS is used to perform all necessary functions to properly initialize the system's hardware when powered on. The BIOS also controls the boot process, provides low-level input/output routines (hence its name) and (often) allows the user to modify details of the system's hardware configuration. In the case of consoles, the system BIOS does not allow modifications to be made, as it is all factory set for several reasons, including security and copyright protection.
Pronunciation: bye-ose
Also Known As: CMOS
Examples:
The BIOS of the Xbox, as with most other consoles, cannot be modified without the use of a third party electronic device referred to as a modchip. You can tweak your PC's BIOS to increase the overall performance of the machine.
