60 seconds of time, is a very simple thing, it is easy to understand, based on 51 single-chip microcomputer to do

60秒的时间切换\code\ExtDll.iex
..............\....\main.c
..............\....\main.LST
..............\....\main.OBJ
..............\....\STARTUP.A51
..............\....\yu
..............\....\yu.hex
..............\....\yu.lnp
..............\....\yu.M51
..............\....\yu.plg
..............\....\yu.uvgui.Administrator
..............\....\yu.uvopt
..............\....\yu.uvproj
..............\....\yu_uvopt.bak
..............\....\yu_uvproj.bak
..............\Last Loaded TU.DBK
..............\TU.DSN
..............\TU.PWI
..............\code
60秒的时间切换

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