数字万用表，一种多用途电子测量仪器，一般包含安培计、电压表、欧姆计等功能，有时也称为万用计、多用计、多用电表，或三用电表-Digital multimeter, a multi-purpose electronic measuring instrument, voltage meter, ammeter, generally contain ohmmeter function, sometimes referred to as the multimeter, multipurpose meter

STC12C2052AD程序，包括一些相关资料：STc12c2052ad头文件、用STC12C2052A单片机制作的0-99V数字电压表源程序（参考别人的）-STC12C2052AD program, including some related information: STc12c2052ad header files, produced by STC12C2052A microcontroller digital voltmeter 0-99V source (refer others)