功能简介：

该实验使用上一个实验的实验程序测量外接电压值。下载好程序后，将外接电压连接到ADC IN的2号引脚上，数码管上显示的即为当前外接电压的电压值。外接电压应在0~5V之间，过大会烧坏ADC0832芯片，请务必注意！-Features:

　　The experiment using the experimental procedure on an experimental measure external voltage. Download a good program, the external voltage is connected to ADC IN pin No. 2 on the digital display on the external voltage is the voltage of the current value. External voltage should be between 0 ~ 5V, burn ADC0832 chip over the General Assembly, be sure to note