采用ATMEL公司的AT89C51单片机为核心，实现对交通灯的控制。并扩展了红绿灯的倒计时功能，具有实用性。文中详细描述了程序设计原理及过程，首先进行程序的编写，通过达爱思集团的DAIS-596H高级组合仿真开发系统并连接国防科大实验板，多次调试运行得到满意结果后，用启东市英赛特计算机厂的RP-3000通用编程器将程序固化到AT89C51芯片上，由其完成控制功能。-　ATMEL Corporation AT89C51 used as the core single chip to achieve the control of traffic lights. And expand the traffic light countdown function, is practical. In this paper, a detailed descr iption of the procedures and process design principles, first of all to carry out the preparation procedures, through the Ace Group of DAIS-596H High portfolio simulation development system and connect国防科大board has been satisfied with the results of testing after the operation, using qidong the city of the British Poll computer plant RP-3000 Universal programmer to program the AT89C51 chip curing, its complete control.