以单片机AT89C2051为核心，74HC164和ULN2003为外围，采用独特的编程思想，使得作品具有日历，闹钟，时钟和整点提醒功能，并可以随时更改设置、查看当前日历或闹钟,各显示状态均有明显的特征。其中，日历具有闰年补偿功能，并可对日历设置进行纠错，在时钟工作状态下进行的查看操作不影响计时，在此状态可以撤消或重启闹钟。-AT89C2051 microcontroller as the core, 74HC164 and ULN2003 peripheral, unique programming ideas, makes the work calendar, alarm clock, clock, and the whole point of reminder, and you can change the settings at any time, to view the current calendar or alarm clock, each display status significantly characteristics. Which calendar with leap year compensation, and calendar settings, error correction clock state to see if the operation does not affect the timing in this state can undo or restart the alarm clock.