说明：  以微软公司MSCom串口通信控件为底层接口，建立了一个简单的串口通信协议(spcp)。spcp协议的设计基于帧传输的思想，采用发送／应答／重连/失败的方式进行．利用该协议能实现双机短信聊天、文件传输等实时数据通信功能。
(To the Microsoft MSCom serial communication control for the underlying interface, a simple serial communication protocols (spcp). spcp protocol design is based on the idea of frame transmission, the use of send/reply/reconnect/fail. The agreement can achieve double text chat, file transfer and real-time data communication function.)