单片机打铃系统设计
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密 惠 保
摘 要
本文设计了自动打铃系统的硬件电路和软件程序。
自动打铃系统以单片机AT89C51为微处理器, DS12887为时钟芯片,8279为键盘显示接口芯片,实现了自动打铃,系统可以根据需要通过键盘调整打铃的时间,通过6位数码管显示当前的时间。文中给出了硬件电路图和软件程序,并对部分程序设计给出了程序框图。自动打铃系统电路简单,功能齐全。
关键词:自动打铃系统; 单片机AT89C51; DS12887; 8279 [资料来源:http://think58.com]
Abstract
This article designed has hit the bell system's hardware circuit and the software routine automatically. Automatically hits the bell system take monolithic integrated circuit AT89C51 as the microprocessor, DS12887 is the clock chip, 8279 for the keyboard demonstration connection chip, realized has hit the bell automatically, the system may according to need to hit bell's time through the keyboard adjustment, through 6 nixietube demonstration current time. In the article has given the hardware circuit diagram and the software routine, and has given the flow chart to the subprogram design. Hits the bell system circuit to be simple automatically, the function is complete. [来源:http://think58.com]
key word: Hits the bell system automatically; Monolithic integrated circuit AT89C51; DS12887; 8279 [版权所有:http://think58.com]
[版权所有:http://think58.com]
目录
摘 要 1
Abstract 2
目录 3
1.1 本课题研究的意义 4
1.2 本文研究的内容 4
第2章 设计任务及要求 5
2.1 设计任务 5
2.2 设计要求 5
第3章 系统方案设计 7
第4章 系统硬件电路设计 8
4.1总体方案设计 8 [来源:http://www.think58.com]
[资料来源:THINK58.com]
[资料来源:http://think58.com]