实现对8路电脑控制开关的控制，将开关通过串口连接电脑上，程序通过串口通信方式 ，控制每组开关的打开与闭合。方便控制其它设备的电源。-Computer control to achieve the 8-way control switch, the switch through the serial port on the computer, the program through the serial communication to control the opening and closin