包含若干个VHDL小例子，有交通灯，电子琴，简易秒表，等等，交通灯已经测试过，根据自己的需要，稍微改动，很好用！-VHDL contains a number of small example, there is traffic lights, Electronic organ, simple stopwatch, and so on, traffic lights have been tested, according to their own needs, slightly altered,