如今，单片机上往往集成了ADC，但是没有负电压供电。1个没有负电压供电的ADC可以测量负电压吗？单极性供电的ADC要测量负电压该怎么解决？ADC的测量范围不足又该怎么解决？本文讨论了这个问题-Now, are often integrated single-chip ADC, but no negative voltage supply. 1 no negative voltage supply negative voltage of the ADC can measure it? Unipolar power supply voltage of the ADC to measure the negative how to solve? Inadequate measurement range of the ADC how should solve? This article discusses the problem