Keil developed, you can run in the C51 series of single-chip clock procedures.

Packet : 3970955380c51clock.rar filelist
时钟\TIMER.txt
时钟\TIMER1.ASM
时钟\clock.plg
时钟\TIMER1.LST
时钟\clock.lnp
时钟\clock.M51
时钟\lily_calculator.obj
时钟\clock.Opt
时钟\clock.Uv2
时钟\TIMER1.OBJ
时钟\lily_calculator.lst
时钟

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