TRAFFIC_LAMP.rar包括电路图和源程序，用51单片机实现。能控制东西、南北方向的红、黄、绿灯，东西、南北方向的通行时间（即绿灯的时间）可以修改。-TRAFFIC_LAMP.rar including schematics and source code, using 51 single-chip realization. Able to control things, the North-South direction of the red, yellow and green, things, north-south direction of the passage time (ie, green time) can be amended.