Timer/counter is essentially a counter is incremented. With its counter input pulses self plus one, that is, each to a pulse counter is automatically incremented by 1,, when applied to the counter to all 1, then enter a pulse on the counter back to zero, and the counter overflows the corresponding interrupt flag, issued to the CPU interrupt request (timer/counter interrupt enabled)

9.万年历实验（DS1302）\9.定时器实验.ppt
......................\DS1302显示效果.jpg
......................\..........时钟\ds1302.c
......................\..............\ds1302.h
......................\..............\lcd.c
......................\..............\lcd.h
......................\..............\main.c
......................\..............\pro
......................\..............\pro.hex
......................\..............\pro.M51
......................\..............\pro.plg
......................\..............\pro.uvgui.Administrator
......................\..............\pro.uvopt
......................\..............\pro.uvproj
......................\..............\pro_uvopt.bak
......................\..............\pro_uvproj.bak
......................\..............\STARTUP.A51
......................\..............（可以按键设置时钟）\ds1302.c
......................\..................................\ds1302.h
......................\..................................\lcd.c
......................\..................................\lcd.h
......................\..................................\main.c
......................\..................................\pro
......................\..................................\pro.hex
......................\..................................\pro.M51
......................\..................................\pro.plg
......................\..................................\pro.uvopt
......................\..................................\pro.uvproj
......................\..................................\pro_uvopt.bak
......................\..................................\STARTUP.A51
......................\数码管显示时钟\ds1302.c
......................\..............\ds1302.h
......................\..............\main.c
......................\..............\pro.hex
......................\..............\pro.M51
......................\..............\pro.plg
......................\..............\pro.uvgui.Administrator
......................\..............\pro.uvopt
......................\..............\pro.uvproj
......................\..............\pro_uvopt.bak
......................\..............\pro_uvproj.bak
......................\..............\STARTUP.A51
......................\DS1302显示时钟
......................\DS1302显示时钟（可以按键设置时钟）
......................\数码管显示时钟
9.万年历实验（DS1302）

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