【实验28】蜂鸣器播放音乐\2 ........................\2.hex ........................\2.lnp ........................\2.M51 ........................\2.plg ........................\2.uvopt ........................\2.uvproj ........................\单音音乐.c ........................\单音音乐.LST ........................\单音音乐.OBJ 【实验28】蜂鸣器播放音乐