What is a computer CMOS

In the computer field, CMOS often refers to the chip that holds the basic startup information (such as date, time, startup settings, etc.) of the computer. Sometimes people will mix CMOS and bios, in fact, CMOS is the motherboard on a read-write RAM chip, is used to save the BIOS hardware configuration and user settings for certain parameters. The CMOS can be powered by the motherboard's battery, and the information will not be lost even if the system loses power. The CMOS ROM itself is only a piece of memory, only data saving function. and the BIOS in the parameters of the setting to pass a special program. The BIOS setup program is generally integrated into the chip by the manufacturer, and the system can be easily set up by the BIOS setup program through a specific key during power-on. Therefore, the BIOS settings are sometimes called CMOS settings.

CMOS is the abbreviation of complementary Metal oxide semiconductor (complementary metal oxide semiconductor). It refers to a technology used in the manufacture of LSI chips or chips made from this technology. is a readable and writable RAM chip on the computer's motherboard. Because of the read-write feature, the computer board is used to save data after the BIOS has set the computer hardware parameters, and this chip is only used to store data.