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Design of traffic light
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Design of traffic signal control circuit, mainly applied to cross the intersection of these two roads converging to form, layout of four sets of lights on each of the four directions of traffic operation management, and two sets of traffic lights and the North-South when two sets of traffic lights. Light rule: when a red light in the direction of North and South, and b corresponds to the green light, the transition from green into red yellow light, is a North-South direction a red light in the direction of time is equal to b the green light and yellow light and time. Similarly, when things are brightening at a red light in the direction of b, a traffic light in the direction of North and South also follows this rule. A NIXIE tube is installed on all roads, displays a countdown of the road the lights shining time.
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