利用定时器和蜂鸣器唱歌\汇编\MAIN
......................\....\MAIN.ASM
......................\....\MAIN.LST
......................\....\MAIN.M51
......................\....\MAIN.OBJ
......................\....\STARTUP.A51
......................\....\STARTUP.LST
......................\....\STARTUP.OBJ
......................\....\TEMP.LST
......................\....\fengmingqi
......................\....\fengmingqi.M51
......................\....\fengmingqi.Opt
......................\....\fengmingqi.Uv2
......................\....\fengmingqi.hex
......................\....\fengmingqi.lnp
......................\....\fengmingqi.plg
......................\....\fengmingqi_Opt.Bak
......................\....\fengmingqi_Uv2.Bak
......................\C程序\STARTUP.A51
......................\.....\STARTUP.LST
......................\.....\STARTUP.OBJ
......................\.....\main.LST
......................\.....\main.OBJ
......................\.....\main.c
......................\.....\yinyue
......................\.....\yinyue.M51
......................\.....\yinyue.Opt
......................\.....\yinyue.Uv2
......................\.....\yinyue.hex
......................\.....\yinyue.lnp
......................\.....\yinyue.plg
......................\.....\yinyue_Opt.Bak
......................\.....\yinyue_Uv2.Bak
......................\汇编
......................\C程序
利用定时器和蜂鸣器唱歌