以AT89S52单片机为核心，构成单片机控制电路，结合DS1302时钟芯片和24C02FLASH存储器，完成时间的自动调整和掉电保护，全部信息用液晶显示。时间、日期调整由三个按键来实现，并可对闹铃开关进行设置。-AT89S52 microcontroller as the core, constitute a single-chip microcomputer control circuit, combined with the DS1302 clock chip and 24C02FLASH memory, the time to complete the automatic adjustment and power down protection, all information with LCD display. Time, date adjustment by three keys to achieve, and the alarm switch can be set.