Introduction - If you have any usage issues, please Google them yourself
1. Design a crossroads, the traffic lights control circuit, A request lane motorway and two B crossover vehicles on the road alternate operation, each time as the passage of 25 seconds; 2. Asked yellow first-five seconds, can transform running lane; 3. According to the traffic light control system block diagram, paint a complete circuit. 3. PCB design plans
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asda.doc