采用12位的串行AD转换芯片TLC2543对输入电压进行AD转换，TLC2543连到51单片机，AD转换结果通过数码管显示。该工程文件在keil环境下编译，用proteus仿真通过。-using 12-bit AD transfer chip--TLC2543 to acquire input voltage,TLC2543 is connected to C51 microprocessor,the AD transfer result will show on LED DISPLAY.The project is compiled under keil environment, and pass proteus simulation.