描述了虚拟串口软件整体框架、虚拟串口设备驱动程序（Ethcomm.sys）和虚拟串口网络服务程序（Service.sys）包括服务程序与虚拟串口驱动程序的接口及服务程序流程框-Describes the overall framework of the software virtual serial port, virtual serial port device driver (Ethcomm.sys) and virtual serial ports Network Service program (Service.sys) including the service program and the virtual serial port driver interface and service process flow box