设计一种基于单片机的交通灯模拟系统，该系统由交通灯设置电路、单片机、显示电路等构成。单片机是集成的IC芯片，只需根据实际设计要求选型。其他部分都需要根据应用要求和性能指标自行设计-To design a microcontroller-based simulation system of traffic lights, the system of traffic lights to set the circuit, the composition of the microcontroller, and the display circuit. SCM is the integration of IC chips, just based on actual design requirements selection. Other parts of the self-designed according to application requirements and performance indicators