交通灯控制器(1)用两组红、黄、绿三色灯作为两个方向的红、黄、绿灯；

(2)用两组数码管作为东西和南北方向的倒计时显示，显示时间为红灯45秒、绿灯50秒、黄灯5秒；

(3)按照实际红绿灯规则，使红、黄、绿灯与其显示时间对应；

发挥部分

(1)按S1键后，显示倒计时的两组数码管闪烁，且计数器停止计数并保持在原来的状态；

(2)按S2键后，东西、南北路口均显示红灯状态。-Traffic Light Controller (1) with two sets of red, yellow, and green lights as the two directions of red, yellow, green　(2) with two sets of digital control things and north-south direction as a countdown to show time for the red lamp 45 seconds, 50 seconds green, yellow 5 seconds　(3) the actual traffic light in accordance with the rules, so that red, yellow, green corresponds to its display time　to play a part (1) Press the S1 button, two LED display flashing countdown , and the counter stops counting and remain in their original state　(2) Press the S2 key, east and west intersections have red light status.