文档介绍：摘要
本文介绍了一款基于AT89S51单片机数字钟的设计,通过多功能数字钟的设计思路,详细叙述了系统硬件、软件的具体实现过程。论文重点阐述了数字钟硬件中MCU模块、语音模块、时钟模块和相关控制模块等的模块化设计与制作;软件同样采用模块化的设计,包括中断模块、闹钟模块、时间调整模块设计,并采用简单流通性强的C语言编写实现。本设计实现了时间与闹钟的修改功能、年、月、日和星期的显示功能。并且通过对比实际的时钟,查找出了误差的来源,确定了调整误差的方法,尽可能的减少误差,使得系统可以达到实际数字钟的允许误差范围内。
关键词:AT89S51单片机;数字钟;闹钟
Abstract
This paper introduced the design of digital clock based on SCM of AT89S51, the specific process of how the system hardware and software achieved were detailed description through the design of multifunction digital clock. The modular design and production, which consisted of MCU module, clock module and the associated control module, were mainly recounted;As well as hardware designing,software design use the same method, consists suspension module,alarm clock module, time adjust module, and that use the C language to achieve because of its simple and strong negotiability. In this design the functions of time and alarm clock run and change, voice broadcast,functions of the year, month, day and week display have been achieved. And paring the actual clock, find out the source of the error and determined the method of adjusting error, reduce errors as much as possibly, so this system can achieve a practical digital clock with error within the permissible range.
Key words:AT89S51 microcontroller; Digital clock; alarm
目录
引言…………………………………………………………………………5
1 绪论………………………………………………………………………5
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数字钟的应用…………………………………………………………………………6
2 整体设计方案……………………………………………………………7
单片机的选择…………………………………………………………………………7
单片机的基本结构……………………………………………………………………9
3 数字钟的设计……………………………………………………………10
数字钟外围电路设计………………………………………………………………10
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数字钟的软件设计……………………………………………………………………13
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