简单的音乐C程序，特别适合初学者， 会一点单片机看懂不成问题，简单的谢盖就能得到其他效果，会提高初学者的兴趣。-Simple music C procedures, particularly suitable for beginners, will not be a problem to understand that the single-chip, a simple thank covered can be other effects, will improve the interest