让实验板上的8 个LED 周期性的闪烁。通过这个实验，熟悉并掌握采用计数 与判断的方式来实现分频的Verilog HDL 的编程方法以及Quartus II 软件的使 用方法和开发流程。-The experimental board 8 LED periodically flashes. Through this experiment, the familiar and the master counts and judgment to achieve the Verilog HDL p