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.

音乐万年历\DS12CR887mnl.uvproj
..........\DS12CR887时钟电路图.pdf
音乐万年历

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