通过编写程序，使系统中的交通灯部分进行正常工作。控制各路口交通灯的亮灭，实现道路的正常停车与放行。并在交通灯部分的数码管显示界面中显示各状态时间。-Through the preparation process, the system is part of the traffic lights work. Control the light off junction traffic lights to achieve the normal road parking and released. P