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C51交通灯
- 用LED作为信号灯模拟交通灯 南北方向道路绿、黄、红灯亮时间分别是60s、50s、10s 东西方向道路绿、黄、红灯亮时间分别是60s、50s、10s、(Use LED as a signal light to simulate traffic lights North and south direction, road green, yellow, red light, respectively, 60s, 50s, 10s East and west directions, green