24实验二十四单片机唱歌实验\SY24 ..........................\SY24.C ..........................\SY24.hex ..........................\SY24.lnp ..........................\SY24.LST ..........................\SY24.M51 ..........................\SY24.OBJ ..........................\SY24.Opt ..........................\SY24.plg ..........................\SY24.Uv2 ..........................\SY24_Uv2.Bak 24实验二十四单片机唱歌实验