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 closing each switch. Convenient control of other devices.