51单片机蜂鸣器操控播放音乐 蜂鸣器只能播放滴滴的响声。但是可以通过操控蜂鸣器的频率HZ来达到操作蜂鸣器发出简单的音乐的目的-51 SCM buzzer buzzer control only play music and pieces of sound. However, the frequency can be controlled buzzer buzzer HZ simple operation to achieve the purpose of music