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1.运用所学的知识设计一个交通灯控制系统。
2.上电的时候南北方向的红灯亮25秒;东西方向的绿灯亮20秒,绿灯秒闪2
秒,黄灯秒闪3秒。再接下来东西方向的红灯亮25秒;南北方向的绿灯亮20秒,绿灯秒闪2秒,黄灯秒闪3秒。如此循环。
-1. Use knowledge to design a traffic light control system. 2. The power of the north-south direction when the red light 25 seconds east-west direction of the green light is 20 seconds, two seconds the green light flash seconds, three seconds flashing yellow light seconds. East-west direction and then the next 25 seconds the red light the green north-south direction and 20 seconds, two seconds the green light flash seconds, three seconds flashing yellow light seconds. Such a cycle.
2.上电的时候南北方向的红灯亮25秒;东西方向的绿灯亮20秒,绿灯秒闪2
秒,黄灯秒闪3秒。再接下来东西方向的红灯亮25秒;南北方向的绿灯亮20秒,绿灯秒闪2秒,黄灯秒闪3秒。如此循环。
-1. Use knowledge to design a traffic light control system. 2. The power of the north-south direction when the red light 25 seconds east-west direction of the green light is 20 seconds, two seconds the green light flash seconds, three seconds flashing yellow light seconds. East-west direction and then the next 25 seconds the red light the green north-south direction and 20 seconds, two seconds the green light flash seconds, three seconds flashing yellow light seconds. Such a cycle.
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