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以交通灯控制为例,阐述了定时器在顺序控制的作用,为了保证顺序控制的顺利进行,有必要将运动动作进行分解并加以状态标识。
Take the traffic light control as an example, expounds the function of timer in sequence control. In order to ensure the smooth progress of sequence control, it is necessary to decompose and mark the motion.