Basic Input\/Output System (BIOS) Basic input\/output Settings. Its full name should be ROM-BIOS, which means read-only memory basic input\/output system.
In fact, it is a set of programs solidified to a ROM chip on the computer motherboard, which saves the most important basic input and output programs of the computer, system setting information, power-on self-test programs and system startup bootstrap programs.
But many people do not think so, because it is different from general software, and it is also quite close to the hardware.
Whether the performance of a motherboard is superior or not depends to a large extent on whether the management function of the BIOS program is reasonable and advanced.
The BIOS before 586 is mostly rewritable EPROM chip, and the label above plays a role in protecting the BIOS content (ultraviolet irradiation will cause the EPROM content to be lost), and can not be torn off casually.
The ROM BIOS after 586 mostly uses EEPROM(electrically erasable read-only ROM), through the jumper switch and the driver disk with the system, the EEPROM can be rewritten, and the BIOS can be easily upgraded.
The common BIOS chips are Award, AMI, Phoenix, MR, etc., and the manufacturer's mark can be seen on the chip.