C语言编写的AVR单片机跑马灯程序，通过轮循控制PortB口电平，实现LED发光二极管的点亮与熄灭，是掌握AVR单片机端口控制和练习C语言编程的非常不错的应用实例。-C language program AVR microcontroller Marquee, by round robin control PortB port level, the LED light emitting diode and off, is to master the control of the AVR port