本电子钟系本人自创，利用单片机AT89S52控制日历时钟芯片DS12C887实现多功能数字时钟。该时钟由单片机控制日历时钟芯片实现年份、月份、日期、时间信息的获取，并且通过LCD12864对年份、月份、日期、星期、节日、时间信息进行显示，可以对年份、月份、日期、星期、时间进行修改，具有掉电后时间信息不丢失的功能。另外具有闹钟功能和具有整点报时功能，可设置闹铃时间，当闹铃时间到时，进行闹铃，通过任意按键可解除闹铃；当整点到来，鸣奏音乐。采用18B20进行温度测控，超出温度阈值将会进行报警。我们将程序固化到单片机中，并且设有程序下载口，可以方便对程序进行升级。-Department of the electronic clock I own, the MCU AT89S52 control calendar clock chip DS12C887 multifunction digital clock. The clock calendar clock chip is controlled by the microcontroller to achieve the year, month, date, time, access to information and by LCD12864 on the year, month, date, week, holidays, time information display on the year, month, date, week, time modify the time information is not lost after power off function. In addition to the alarm clock function and the whole point timekeeping function, you can set the alarm time, alarm time is reached, the alarm, the alarm on any key　when the whole point of arrival, blared music. The 18B20 temperature measurement and control, exceeding the temperature threshold will alarm. The curing process to the microcontroller, and a program to download the mouth, you can easily upgrade to the program.