File list (Check if you may need any files):
超声波测距----全CSB_S51\AT89S51超声波测距原理图.JPG
.......................\CSB3LEDH.PCB
.......................\CSB3LEDH.pcbdoc_viewstate
.......................\CSBFS.ASM
.......................\CSBFS.LST
.......................\CSBFS.OBJ
.......................\CSBFS._ia
.......................\CSB_S51
.......................\CSB_S51.C
.......................\CSB_S51.hex
.......................\CSB_S51.lnp
.......................\CSB_S51.LST
.......................\CSB_S51.M51
.......................\CSB_S51.OBJ
.......................\CSB_S51.Opt
.......................\CSB_S51.plg
.......................\CSB_S51.Uv2
.......................\CSB_S51.__i
.......................\History\S51CSBA.~(1).SCH.Zip
.......................\S51CSBA.SCH
.......................\STARTUP.LST
.......................\STARTUP.OBJ
.......................\History
超声波测距----全CSB_S51