一个简单十字路*通灯控制器。该控制器控制甲乙两道的红、黄、绿三色灯，指挥交通和行人安全通行。复杂十字路*通灯控制器要比简单交通灯控制器增加一些功能，如倒计时时间显示，左转弯（左拐）、指示灯闪烁及特殊紧急情况的处理等。-A simple crossroads of traffic light controller. The controller controls the A and B two of red, yellow and green lights directing traffic and pedestrians safe passage. Complex crossroads traffic lights controller than a simple traffic light controller to add some features, such as the countdown time display, turn left (turn left), the indicator flashes and special handling of emergency situations.