File list (Check if you may need any files):
简单交通灯\4、简单交通灯(稍高级).DSN
..........\4、简单交通灯(稍高级).PWI
..........\a
..........\a.asm
..........\a.lnp
..........\a.LST
..........\a.M51
..........\a.OBJ
..........\a.plg
..........\a.uvopt
..........\a.uvproj
..........\a_uvopt.bak
..........\a_uvproj.bak
..........\b
..........\b.hex
..........\b.lnp
..........\b.M51
..........\b.plg
..........\c.hex
..........\c.lnp
..........\c.M51
..........\c.plg
..........\Last Loaded 4、简单交通灯(稍高级).DBK
..........\STARTUP.A51
..........\STARTUP.LST
..........\STARTUP.OBJ
..........\Text3.asm
简单交通灯