本实验要完成任务就是设计一个简单的交通灯控制器，交通灯显示用实验箱的交通灯模块和七段码管中的任意两个来显示。系统时钟选择时钟模块的1KHz 时钟，黄灯闪烁时钟要求为2Hz，七段码管的时间显示为1Hz 脉冲，即每1s 中递减一次，在显示时间小于3 秒的时候，通车方向的黄灯以2Hz的频率闪烁。系统中用S1 按键进行复位。-To complete the tasks in this experiment is to design a simple traffic light controller, traffic lights display box with the experimental traffic lights control module and the seventh of arbitrary code to display the two. Select system clock clock module 1KHz clock, clock called for blinking yellow light 2Hz, and seventh time code display tube for 1Hz pulse, that is diminishing every 1s in time, display time in less than three seconds when the opening direction of the yellow flicker frequency to 2Hz. System used for reset button S1.