自己用C做的非阻塞多线程socket文件传输程序，由于时间紧存在一定的问题，但对于socket入门者可以学习到一定东西的-Own use C to do non-blocking multi-threaded socket file transfer process, due to tight schedule, there are some problems, but beginners can learn the socket to a certain thing

用C#串口控件开发的一个串口通信工具，可以用来学习多线程与串口通信-With C# Serial control the development of a serial communication tool that can be used to study multiple threads and serial communication