BIOS is the abbreviation of "Basic Input Output System" in English, and its Chinese name is "basic input output system" after literal translation. In fact, BIOS is a set of programs solidified on the ROM chip on the computer motherboard, which stores the most important basic input and output programs of the computer, the self-check program after startup and the system self-startup program, and can read and write the specific information of system settings from CMOS.