Final answer:
BIOS stands for Basic Input/Output System and is a firmware that controls and manages hardware components in a computer.
Step-by-step explanation:
BIOS stands for Basic Input/Output System. It is a firmware that is built into a computer's motherboard. The BIOS initializes and controls the hardware components of the computer when it is powered on, performing tasks such as starting up the operating system and managing devices like the keyboard, mouse, and hard drive.
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