通过串口实现pc跟开发板通信，开发板商店后会有一个界面，街面上有小键盘，点击小键盘输入数据，之后点击发送，会在pc端串口调试助手哪里收到数据，反之，会在开发板上接收到数据-Pc via serial port to communicate with the board, after the store will have a development board interface, the streets have a keypad, click on the keypad to enter data, and then click Send, in the end pc serial debugging assistant where data is received, on the contrary, will the development board to receive data