基于单片机的时钟计时器的设计 大学毕设论文.doc

太原理工大学阳泉学院---- 毕业设计说明书第页 1 摘要时钟是人类日常生活必不可少的工具,本设计从日常生活中常见的事物入手,通过对时钟计时器的设计,让我们认识到单片机已经深入到我们生活的每个领域,该设计不仅可以锻炼我们的动手能力,而且可以加深我们对单片机的认识和激发我们对未知科学领域的探索。本文利用单片机实现数字时钟计时功能的主要内容,采用独立式按键进行时间调整,其中 AT89C5 2是核心元件同时采用数码管 LED 动态显示“时”,“分”,“秒”的现代计时装置。与传统机械表相比,它具有走时精确, 显示直观等特点。它的计时周期为 24 小时,显满刻度为“23时59分59秒”,另外具有校时功能,断电后有记忆功能,恢复供电时可实现计时同步等特点。该系统同时具有硬件设计简单、工作稳定性高、价格低廉等优点。关键字 AT89C52 LED 显示 244 Abstract Human Clock is an essential tool for everyday life, from the design of everyday things mon start, the clock timer through the design, let us recognize that SCM has the depth to each area of our lives, not only the design Can exercise our practical ability, but can also deepen our understanding of the SCM and inspire us to explore the unknown field of science. Using MCU digital clock timing of the main contents of a stand-alone keys to time to adjust, while AT89C52 is the ponent of the LED digital display dynamic "," "points" and "seconds" of modern timing devices. Compared with the traditional mechanical watches, it has aprecise path that intuitive, and other characteristics. It's time for the 24-hour cycle, in full scale as "23:59:59", and aschool function, memory function after power and restore power supply can be realized at the time synchronization, and other characteristics. The system also has hardware design simple, high stability work, the advantages of low prices. 太原理工大学阳泉学院---- 毕业设计说明书第页 2 Keyword :AT89C52 LED display 244 目录第一章前言.................................................................................................................... 3 第一节选题目的和意义............................................................................................. 3 第二节国内外发展情况............................................................................................. 4 一单片机的发展历程....................................................................................................... 4 二单片机的发展趋势......................................................................................................