基于ICL7107的数字电压表，内含使用芯片的手册，整流电路和工作电路的proteus截图，已做出实物验证，电压表功能完全可以实现。-Based on the number of ICL7107 voltmeter, using the chip containing the manual, the rectifier circuit and operating circuit of the proteus shots, physical verification has been made, the voltmeter function can achieve.