实验10 按键控制跑马灯

代码说明：

说明：  使用单片机对灯泡进行控制，制做做出跑马灯的效果，简单加深对定时器的理解和蜂鸣器的应用，更深入的理解51的内部结构和使用方式。学会用单片机控制灯。(The use of single-chip microcontroller to control the light bulb, make a running horse lamp effect, simple deepen the understanding of timer and buzzer application, more in-depth understanding of the internal structure and use of 51. Learn to control the lamp with single chip computer.)