一个基本的实现网络点的绘制，与网络点的连接，并能保存绘图的文件-one of the basic points of the network mapping, and the network connection point, and the preservation of the documents Mapping

一个绘制网络拓扑结构的图的vc代码，可以直接约束求解，而且可以用箭头直线连接2个网格图形！

简单的串口调试程序，基于qt编写的串口收发程序，可以连接网络-Simple serial debugger, prepared by the serial transceiver based on qt program, you can connect to the network