Explanation:
The BIOS is firmware embedded on a computer’s motherboard that initializes and tests hardware components during the boot process. It provides a software interface for the operating system to communicate with hardware devices.

BIOS performs essential tasks like the Power-On Self Test (POST), identifying boot devices, and loading the operating system bootloader.

Although BIOS has been largely replaced by UEFI in modern systems, it remains a foundational component in computing history.

Formal Definition:
The BIOS (Basic Input/Output System) is firmware responsible for initializing hardware components and loading the operating system during the boot process.

Additional Information:
The BIOS resides in non-volatile memory, such as ROM or flash memory, to retain its configuration settings.

Users can access the BIOS setup utility to configure system settings like boot order, clock speeds, and security features. Incorrect settings may affect system performance or stability.