包含硬件电路和程序：硬件电路包括8051单片机、8位8路a/d转换器adc0808、4位led数码管。软件部分包括adc0808转换数据读取、相应数据处理、送led显示。-Contains a hardware circuit and procedures: the hardware circuit 8051, and eight 8-channel a/d converter adc0808, led digital tube. The software part including adc0808 convert data to read the corresponding data processing, send led display.