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Design of a Multi-function Clock Based on SCM AT89C52
Author(s): 
Pages: 61-64
Year: Issue:  4
Journal: Electronic Engineer

Abstract: 文中设计了一个显时、调时、定时以及具有整点报时功能的电子钟.电子钟使用12MHZ晶振与AT89C52单片机相连接,通过软件编程的方法实现了以24小时为一个周期,同时显示小时、分钟和秒的要求,而且有三组定时计数功能.在定时时间到时有蜂鸣报警.该电子钟设有五个按键按钮S1 ,S2,S3, S4和S5键,使之具备了校时、定时和复位功能.同时,电子钟还设计了掉电保护电路,当电源断电时能保存时钟当前定时设计...
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