This a development of a clock on the KEIL program, it does not need to use the clock chip, only the microcontroller s own resources to complete, accurate and reliable travel time.

时钟程序
........\STARTUP.A51
........\STARTUP.LST
........\STARTUP.OBJ
........\时钟
........\时钟.c
........\时钟.hex
........\时钟.lnp
........\时钟.LST
........\时钟.M51
........\时钟.OBJ
........\时钟.opt.bak
........\时钟.plg
........\时钟.Uv2.bak
........\时钟.uvopt
........\时钟.uvproj
........\时钟_Opt.Bak
........\时钟_Uv2.Bak
........\时钟_uvopt.bak

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