Abstract: This article describes the whole point of time based on the ATmega8 switch to adjust for time, there are the whole point timekeeping devices. Hardware circuit includes: keyboard circuit, display circuit, reset circuit, speakers, and crystal. Program components include: the main program, time adjustment routines, display subroutine, the whole point timekeeping subroutines, interrupt routines. The system through the hardware circuit design, software system design, system debugging, simulation and other four steps to achieve the above functions.

Electronic clock.doc

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