串口\lesson7
....\lesson7.hex
....\lesson7.lnp
....\lesson7.M51
....\lesson7.Opt
....\lesson7.plg
....\lesson7.Uv2
....\lesson7_Opt.Bak
....\lesson7_Uv2.Bak
....\Text1.c
....\Text1.LST
....\Text1.OBJ
串口