The Basic Input/Output System (BIOS) is a ROM chip that is embedded to the computer motherboard.
The BIOS contains instructions for/on:
- POST (Power-On-Self-Test) – Test computer hardware at power on to ensure no errors exist before loading the operating system.
- BIOS drivers – Low-level drivers to perform basic control over your computer’s hardware.
- BIOS/CMOS setup – Configuration program to allow configuration of hardware settings such as date and time.
- Bootstrap Loader – Locates the operating system for the BIOS to pass control to it.
Reference
- What is BIOS? (2020, March 6). Computer Hope’s Free Computer Help. https://www.computerhope.com/jargon/b/bios.htm