通过API调用，可以把从键盘接收到的字符串到串口，然后把获得的字符显示在屏幕上-through API calls can be received from the keyboard to the string of serial and then the characters were shown on the screen

Compile the server and the client separately (it s 2 programs) Then with the server running, connect with the client and make the server s "window" move arround the screen with simple arrow keys on the keyboard of the client computer.