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电脑主板上为什么要安装纽扣电池？其作用何在主板上的这颗电池一般叫做CMOS电池，其并不光是为了保持CMOS内容，同时也是为了维持RTC，也就是时钟运转。 RTC需要持续地用一个晶振给时钟计数器 ...
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