This design uses a single chip (AT89S52) as the core controller of a multi-functional digital clock,complemented by temperature sensor,infrared receiver,buzzer,liquid crystal display(LCD1602),power circuit and other circuit. It implementes time setting,alarm setting,and alarm on/off functions.Moreover, it has some basic functions such as displaying hour and minute,AM/PM indicator light,alarm clock ready light,buzzer alarm and 220V power supply.In the end,this design also can show the scene temperature through switching the keyboards,and stop the alarm by infrared circuit.

多功能数字钟设计报告.doc

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