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,