在DE2-70上使用LCD时，刚开始不知道要接电源，后来经过试验，终于知道要怎么设置了，该工程里面就有，希望能给初学者一些帮助。-DE2-70 used on the LCD when it was not known to take power, was tested, and finally know how to set up the project which had hoped to give beginners some