编写实验程序用实验箱上的发光二极管L0～L7模拟动态广告灯，要求采用单片机内部定时器实现广告灯的流水延时功能（延时1秒），并将广告灯状态循环下去。-Preparation of the experimental procedure using light-emitting diodes on the test box L0 ~ L7 simulate dynamic advertising lights require the use of SCM internal timer the advertising lights flowing delay function (delay of 1 second), and the state of the advertising lights cycle continues.