CMOS and BIOS

CMOS is short for the half guide of complementary metal oxides. It is a technology used to manufacture large-scale integrated circuit chips or a chip manufactured using this technology. In fact, it refers to a read-write storage chip on the motherboard. It stores the clock information and hardware configuration information of the microcomputer system, totaling 128 bytes. When the system powers up the boot, it needs to read the CMOS information to initialize the status of each part of the machine. It is powered by system power supply or back-up battery, power off information will not be lost. BIOS is short for the basic input/output system. It refers to a ROM chip integrated on the motherboard, which stores the most important basic input and output of the microcomputer system. ProgramAnd system boot self-check programs. It initializes and tests various stone hardware of the system during startup to ensure that the system works normally. Because both CMOS and BIOs are closely related to microcomputer system settings, there is a saying that CMOS settings and bios settings are available. CMOS is the place where the system stores parameters, the system setup program in BIOS is a means to complete parameter settings. Therefore, it is accurate to set the CMOS parameters through the BIOS setup program. What we usually call CMOS settings and bios settings is simplified, which leads to confusion between the two concepts to a certain extent.