说明：  交通灯控制器实验报告--- SOC课程设计 一．实验功能 该交通灯控制器，能完成以下功能： ⒈ 显示交通灯的红、黄、绿的指示状态 用L1、L2、L3作为绿、黄、红灯； ⒉ 能实现正常的倒计时功能: 用M2、M1作为南北方向的倒计时显示器，显示时间为红灯8秒，绿灯8秒，黄灯8秒。 ⒊ 能实现特殊状态的功能 （1） 按S1后，能实现特殊状态功能；
(Experimental reports of traffic light controller to design a course--- SOC. Experimental features of the traffic signal controller, to complete the following functions: ⒈ show traffic lights red, yellow and green with the instructions of the state of L1, L2, L3, as green, yellow, red ⒉ countdown to achieve normal function: to use M2 , M1 north-south direction, as the countdown display, showed a red light 55 seconds, 30 seconds the green light, yellow light 15 seconds. ⒊ to achieve the special status of function (1) post-S1, to achieve the special status of function )