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CMOS是一种互补金属氧化物半导体,在微机主板上是一块可读写的RAM芯片,用来保存当前系统的硬件配置信息。CMOS RAM本身只是一块存储器,只有数据保存功能,而对CMOS中各项参数的设定要通过专门的BIOS来设置。BIOS即微机的基本输入输出系统(Basic Input-Output System),是集成在主板上的一个ROM芯片(EEPROM或EPROM),其中保存有微机系统最重要的基本输入/输出程序、系统信息设置、开机上电自检程序和系统启动自举程序。现在多数厂家将CMOS设置程序做到了BIOS芯片中,在开机时通过特定的按键就可进入CMOS设置程序,可以方便地对系统进行设置,因此CMOS设置又称BIOS设置。
CMOS is a complementary metal oxide semiconductor, on the computer motherboard is a readable and writable RAM chip, used to save the current system hardware configuration information. CMOS RAM itself is just a piece of memory, only the data save function, and set the parameters of the CMOS through a dedicated BIOS to set. BIOS is the basic input-output system of the computer. It is a ROM chip (EEPROM or EPROM) integrated on the motherboard. The basic input / output program, the system information setting, and the power-on Power-on self-test program and system startup bootloader. Most manufacturers now do the CMOS setup program BIOS chip, at boot through a specific key to enter the CMOS setup program, you can easily set the system, so CMOS settings, also known as BIOS settings.