分析归纳了利用Delphi语言编写串口通信程序的四种方法并且简单阐述了SPCOMM在Delphi环境中作为通信控件的一些属性、方法、函数和事件。最后以实践中编写的一个惯导计算机人机交互测试程序为实例,给出了在Delphi环境中利用SPCOMM控件实现串口通信时所遇到一些常见问题的解决方法、编写串口通信程序的大体框架结构和部分代码。 -Analysis are summarized the Delphi language serial communication program four methods and briefly discusses SPCOMM communication controls in the Delphi environment as some of the properties, methods, functions and events. Last to practice writing an inertial navigation computer human-computer interaction test procedures for instance, some common problems encountered in the Delphi environment using SPCOMM controls serial communication solution, the preparation of the general framework of the serial communication program structure and part of the code.