带有闹钟、温度功能的lcd1602日历，闹钟记忆由24c02保存，通过四个独立按键调时，时间由ds1302提供，温度由ds18b20提供。-With alarm clock, temperature function lcd1602 calendar, alarm clock memory saved by 24c02, through four separate buttons tune by ds1302, temperature is provided by the ds18b20.