利用ATmega16单片机实现对电压值的采样，经芯片内部AD转换，再调用程序将AD转换值转换为实际电压值，并用数码管显示。再由串行通信接口将数据传送到PC机显示，并用2个键控制采样速度。附带原理图，编程代码。-Use ATmega16 microcomputer for voltage sampling, the chip AD conversion, then convert a AD value to the actual voltage values and display on digital tube .The serial communication interface transmit the data to a PC display, and 2 keys to control the sampling rate. this file includes schematics, programming codes.