FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -BIOS, in full Basic Input/Output System, computer program that is typically stored in EPROM and used by the CPU to perform start-up procedures when the computer is turned on. Its two major procedures are determining what peripheral devices (keyboard, mouse, disk drives, printers, video cards, etc.)

Detailed explanation-2: -BIOS instructs the computer on how to perform basic functions like booting and keyboard control; it is also used to identify and configure the hardware in a computer such as the hard drive, CPU, memory, and related equipment.

Detailed explanation-3: -ROM also performs large input/output (I/O) tasks and protects programs or software instructions. Once data is written on a ROM chip, it cannot be removed. Almost every computer incorporates a small amount of ROM that contains the start-up firmware. This boot firmware is called the basic input/output system (BIOS).

Detailed explanation-4: -A computer’s basic input/output system (BIOS) is a program that’s stored in nonvolatile memory such as read-only memory (ROM) or flash memory, making it firmware. The BIOS (sometimes called ROM BIOS) is always the first program that executes when a computer is powered up.