时间显示
........\keil
........\....\111
........\....\111.hex
........\....\111.lnp
........\....\111.M51
........\....\111.Opt
........\....\111.plg
........\....\111.Uv2
........\....\main.c
........\....\main.LST
........\....\main.OBJ
........\....\STARTUP.A51
........\....\STARTUP.LST
........\....\STARTUP.OBJ
........\proteus
........\.......\111.DSN
........\.......\111.PWI
........\.......\Last Loaded 111.DBK