键盘\lesson5_3
....\lesson5_3.hex
....\lesson5_3.lnp
....\lesson5_3.M51
....\lesson5_3.Opt
....\lesson5_3.plg
....\lesson5_3.Uv2
....\lesson5_3_Opt.Bak
....\lesson5_3_Uv2.Bak
....\Text1.c
....\Text1.LST
....\Text1.OBJ
键盘