《单片机技术》课程设计说明书 数 字 电 子 钟
系 、 部： 电气与信息工程学院 学生姓名： 指导教师： 业：
专
职称
班 级：
完成时间： 2013-06-07
摘 要
电子钟在生活中应用非常广泛，而一种简单方便的数字电子钟则更能受到人们的欢迎。所以设计一个简易数字电子钟很有必要。本电子钟采用ATMEL公司的AT89S52单片机为核心，使用12MHz 晶振与单片机AT89S52 相连接,通过软件编程的方法实现以24小时为一个周期，同时8位7段LED数码管(两个四位一体数码管)显示小时、分钟和秒的要求,并在计时过程中具有定时功能，当时间到达提前定好的时间进行蜂鸣报时。该电子钟设有四个按键KEY1、KEY2、KEY3、KEY4和KEU5键,进行相应的操作就可实现校时、定时、复位功能。具有时间显示、整点报时、校正等功能。走时准确、显示直观、运行稳定等优点。具有极高的推广应用价值。
关键词 电子钟；AT89S52；硬件设计；软件设计
ABSTRACT
Clock is widely used in life, and a simple digital clock is more welcomed by people. So to design a simple digital electronic clock is necessary.The system use a single chip AT89S52 of ATMEL's as its core to control The crystal oscillator clock,using of E-12MHZ is connected with the microcontroller AT89S52, through the software programming method to achieve a 24-hour cycle, and eight 7-segment LED digital tube (two four in one digital tube) displays hours,
minutes and seconds requirements, and in the time course of a timing function, when the time arrived ahead of scheduled time to buzz a good timekeeping. The clock has four buttons KEY1, KEY2, KEY3,KEY4 and KEY5 key, and make the appropriate action can be achieved when the school, timing, reset. With a time display, alarm clock settings, timer function, corrective action. Accurate travel time, display and intuitive, precision, stability, and so on. With a high application value. Key words Electronic clock;；AT89S52；Hardware Design；Software Design
目 录
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