BIOS brief explanation

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In a computer system, the CPU is used for computing, memory for storing code and data, and I/O devices for input and output.

Memory is also divided into RAM and ROM

What is 1.BIOS?

BIOS, (basic input/output System) primary input/output systems;

is a set of fixed to the computer board on a ROM chip on the program, it holds the computer's most important basic input and output programs, post-boot self-test program and the system self-start program, it can read and write the system settings from the CMOS specific information.

The BIOS is the first software that is loaded at the start of a PC and is used to power on the self test for each part of the system when the computer is powered on, and to load the bootloader (IPL) or the operating system stored in main memory

2. The first command executed after the computer is power-on

2. BIOS specific process after power-on

BIOS brief explanation