System USES C51 own clock, calendar function was achieved by software, can set a time through the buttons, with alarm clock function.

万年历\calendar.c
......\万年历
......\万年历.hex
......\万年历.lnp
......\万年历.LST
......\万年历.M51
......\万年历.OBJ
......\万年历.plg
......\万年历.uvopt
......\万年历.uvproj
......\万年历_uvopt.bak
......\万年历_uvproj.bak
万年历

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