定时器中断\c.c
..........\c.LST
..........\c.OBJ
..........\cc
..........\cc.hex
..........\cc.lnp
..........\cc.M51
..........\cc.plg
..........\cc.uvopt
..........\cc.uvproj
..........\cc_uvopt.bak
..........\cc_uvproj.bak
..........\STARTUP.A51
..........\STARTUP.LST
..........\STARTUP.OBJ
定时器中断