1、 利用Spartan-3 Starter Board实验板上的旋转开关，设计一个通过旋转开关的方向来控制LED灯的依次点亮顺序的实验，并且要求可以循环点亮。-1, using Spartan-3 Starter Board test panel rotary switch, to design a switch by rotating the direction to control the LED lights in turn lit the order of experiments, and asked to circle lit.
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