这里实现跑马灯的方法是，依次灭掉前一个灯和点亮后一个灯，再延时一会，不断循环，就可以看到跑马灯的效果了。 请在编译后，进入仿真，点全速运行看结果-Marquee realize here the approach is to eliminate the former followed by a light and lit a lamp post, and then one will be delayed, and constantly cycle, you can see the effec