这是我自己做过的多功能电子琴的c源码，用该源码实现的电子琴可以按键弹奏歌曲，可以播放歌曲，还可以将音符用数码管显示出来-This is done my own multi-functional organ of the c-source, and realize the source of the organ can be played key songs, can play songs, the notes can also be displayed using digital tube