Is there such a programmable voltage meter?
有没有这样的可编程电压表？
If your laptop does not use a programmable voltage regulator, it should come with jumpers or switches to set the correct voltage.
如果便携式电脑没有使用可编程电压调节器，则应随附跳线或开关以设置正确的电压。
Most laptops now use voltage ID programmable voltage regulators to allow the processor to program the correct voltage during power-on.
现在，多数便携式电脑都使用电压标识可编程电压调节器，使得处理器可以在加电过程中调用正确的电压。
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