说明：   用C++Builder在Win下开发串行通信程序是程序员们经常遇到却又令人头痛的事情，不但要理解许多复杂的API函数，还要掌握多线程编程。令人欣慰的是有一些公司专门为C++Builder开发了编写串行通信程序的开发工具，例如MOXA公司的Pcomm（该软件可在http:\\www.moxa.com.tw下载），因而帮我们解决了串行编程这一难题。
(With C++ Builder developed in Win serial communication procedure is often encountered by programmers but is headache, not only to understand the many complex API function, but also master the multi-threaded programming. It is gratifying that some companies have specialized for C++ Builder developed the preparation of serial communication program development tools, such as MOXA)