用C#编写的运行用电脑的串口程序，有初始化、打开、关闭、读取串口的功能并能够查找串口的状态显示DTR,DSR。

关于dsr的c语言源代码很大很详细希望有所帮助-the code of dsr

串口通信，收发数据，选择com口及设置波特率。-This requires Visual Studio 2010 to compile, which can be obtained free via C# Express. It is just a simple little application with basic support for text or binary (hex) modes to send and receive data. A nice feature or two