实现单片机与电脑的串口通讯，此实例主要是上位机编程。，通过单片机往串口里发送数据，可以看到主窗口的的A/D转换结果，以及进度条显示电压值变化。-SCM and the computer' s serial communication, this instance of the main host computer programming. Through the microcontroller to send data to the serial port where you can se