利用蜂鸣器演奏音乐，工作不忘娱乐放松。^_^-Use buzzer playing music, the work did not forget to relax entertainment. ^ _ ^

运用蜂鸣器制作一个属于自己的音乐，程序已经进行标注，可自行更改，适用于单片机初学者(The use of buzzer to make a music belonging to their own, the program has been marked, can change its own, suitable for beginners microcontroller)