在VS2012中采用MFC技术编写界面，利用插件mscomm实现串口的打开、关闭、数据发送和接受，程序详细揭示了串口打开的参数设置，适合初学者。-Prepared using MFC technology interface in VS2012, using plug-in serial mscomm achieve open, close, send and receive data, the program reveals detailed parameter settings to ope