C#语言简单实现，串口和USB口编程。对初学者有帮助-Serial and USB port programming

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

c# usb serial com test project