介绍了三星20T202DA1J VFD显示模块的特点、基本结构和工作原理，给出了该模块与AT89C52单片机组成系统的硬件连接和软件流程的设计方案。该方案采用通用I/O口对读写时序进行模拟，利用C语言具体的实现方法以及VFD模块丰富的显示功能，实现了单片机与VFD显示模块的良好接口，并在实际工作场合得到了应用。测试结果表明，该显示系统工作稳定，显示效果较好，刷新速度快，达到了上位机通过串口控制VFD显示的目的。

The characteristics,basic structure and working principle of VFD display module is introduced.A design of hardware connection and software processes is given for the system,which is composed by the module with AT89C52 SCM.In this display program, the timing sequence of writing and reading is simulated by using general I/O port.Using specific implementation methods of C language,and rich display of LCD module,a better interface between SCM and VFD display module is realized,and has been applied to the actual workplace.Test result shows that the display system is stable,and has better display quality and faster refresh rate,it can achieve the objectives that use a host computer to control the VFD display module through serial ports.