微型计算机BIOS忠CMOS供电电池引起的故障分析

BIOS(Basic Input Output System)是计算机能否正常工作的关键,它的主要功能是为计算机提供底层硬件设置和控制。BIOS程序存储在主板BIOS芯片中,主机通电后首先运行BIOS程序对主机硬件进行自检,如有故障将进行报错提示,CMOS(RAM)主要用于存储BIOS设置程序所设置的参数与数据,主机正常运行时主机电源供电,关机时BIOS CMOS中参数由主板电池供电,电池电压低将会BIOS CMOS中的数据丢失,自诊断程序:通过读取CMOS?RAM中的内容识别硬件配置,并对其进行自检和初始化。这时主机BISO自检报错或异常,因此,CMOS供电电池在主机中非常重要。

BIOS(Basic Input Output System)is the key to the normal work of the computer,its main function is to provide the underlying hardware Settings and control for the computer.BIOS program stored in the motherboard BIOS chip,the host first run BIOS program after the power supply for the host hardware self-inspection,if there are any error will be an error prompt,CMOS(RAM)is mainly used to store the parameters set the BIOS setup with the data,the normal operation of the host the host power supply and power off when the BIOS CMOS parameters by the motherboard battery,low battery voltage will be loss of data in the BIOS CMOS,since the diagnostic program:by reading the contents of the CMOS RAM recognition hardware configuration,and carries on the self-check and initialization.In this case,the host BISO self-test gives an error or exception,so the CMOS powered battery is very important in the host.