一种典型数字电压表的设计

A design for a typical digital voltmeter

数字式电压表是现在经常使用的测量仪表．本文给出了一种基于微处理器的测量仪表的电路．它可以测量电压、电流和电阻，同时还有语音功能．

The digital voltmeter is an electrical measuring instrument in current use This paper introduce a digital voltmeter (DVM) design based on the microprocessor. Itnot only can measure voltage, currenl and resistance, but also has speech function.