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【多选题】
关于CMOS和BIOS,下列说法正确的是( )A.
BIOS是指微机的基本输入输出系统,它是一组固化在计算机主板上的程序
B.
当计算机启动后,BIOS会运行自检程序初始化硬件并对计算机硬件进行检测
C.
CMOS是计算机主板上一块可读写的RAM芯片,用来保存当前计算机硬件配置和相关参数设定的信息
D.
CMOS芯片是由系统通过一块后备电池供电,以确保存储的信息不会丢失
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