0831是串行AD芯片,调节点位器就是调节了输入0831的模拟电压的大小，然后通过数码管显示 运行环境:51hei单片机学习板 -0831 AD is the serial chip to regulate the point and the input device is to adjust the size of analog voltage 0831, and then through the digital display operating environment: 51hei