说明：  用MFC实现串口编程, 本文详细介绍了串行通信的基本原理，以及在Windows NT、Win98环境下用MFC 实现串口（COM）通信的方法：使用ActiveX控件或Win API.并给出用Visual C++6.0 编写的相应MFC32位应用程序。关键词：串行通信、VC++6.0、ActiveX控件、Win API、MFC32位应用程序、事件驱动、非阻塞通信、多线程.
(Serial programming using MFC, this article details the basic principles of serial communication, as well as in Windows NT, Win98 environment with MFC Serial (COM) method of communication: the use of ActiveX controls or Win API. And to give with Visual C++6.0 to prepare the corresponding MFC32-bit applications. Keywords: serial communication, VC++6.0, ActiveX controls, Win API, MFC32-bit applications, event-driven, non-blocking communications, multi-threaded.)