Based on a stopwatch timer microcontroller 51 whenever the count 60 seconds, LED lights will be flipped once, readers can change the program on their own, through testing, the effect is significant.

t10\m.c
...\m.LST
...\m.OBJ
...\秒表
...\秒表.hex
...\秒表.lnp
...\秒表.M51
...\秒表.plg
...\秒表.uvopt
...\秒表.uvproj
...\秒表_uvopt.bak
...\秒表_uvproj.bak
t10

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