What is bios meaning?

BIOS stands for Basic Input/Output System and is a firmware that is embedded on a small memory chip on the computer's motherboard. The BIOS acts as an interface between the operating system and the computer hardware, providing essential low-level functionality for the system to boot up and run.

The BIOS performs three primary functions: it performs a power-on self-test (POST), initializes system hardware, and then loads the operating system. During POST, the BIOS checks the system hardware to ensure that all components are functioning properly. If any issues are discovered during this process, the BIOS will report an error. The BIOS also configures and initializes system hardware like the CPU, memory, and hard drive. Finally, the BIOS loads the operating system into the computer's memory and hands over control to it.

In addition to these primary functions, the BIOS has additional features and settings that can be accessed through the BIOS setup utility. These settings allow users to configure system parameters like the boot order, system date and time, and system security features. Advanced users can also modify hardware settings like memory timings and voltages to improve system performance.

Overall, the BIOS is an essential component of a computer system and provides crucial functionality that enables the system to run.