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介绍了一种由ＰＣ系统微机直接控制步进电动机的方法，叙述了系统微机与步进电动机的硬件接口与软件编程的方案．实验运行表明，该方案硬件接口简便，软件易于调试，特别适宜于进一步研究与开发．
A method of directly controlling the stepping motor by the PC system microcomputer is introduced. The hardware interface and software programming of the system microcomputer and the stepping motor are described. Experimental run shows that the program hardware interface is simple, easy to debug software, especially suitable for further research and development.