基于单片机的定时闹钟的设计-毕业设计.doc

. PAGE . 毕业设计论文 论文题目：基于单片机的定时闹钟的设计 系 部 电子通信工程系 专 业 通信网络与设备 班 级 学生姓名 学 号 指导教师 . . 摘 要 随着科技的快速发展和生活水平的不断提高，人们对时钟的精确度和实用性要求越来越高。本文采用AT89S52单片机，通过DS1302日历芯片进行定时，并通过LCD1602液晶进行显示。通过C语言程序编写，将设计出更准确定时、更省电的数字时钟。单片机数字时钟具有设置时间、日期、星期的基本功能，并且能够显示年、月、日、时、分、秒、星期。单片机数字钟不管在性能还是在样式上都发生了质的变化，实践证明单片机数字时钟具有更加准确性、精密性等功能。 关键词：数字时钟；DS1302；LCD1602;AT89S52  Abstract In daily life, time is science, technology and everyday life is one of the most basic physics, we often deal with temporal clocks, such as hand watch, wall clock, even on a computer program, the clock on the phone can be generalized a clock display on the clock, along with the rapid development of technology and the continuous improvement of living standards, people on the clocks accuracy and practical demand is higher and higher. Based on the single chip microcomputer principle, USES the monolithic integrated circuit AT89S52 series, through the hardware circuit and software production procedure formulation, will design a more accurate timing, electricity -saving digital clock, SCM in performance or digital clock no matter in style have undergone a qualitative change, digital clock has proved microcontroller more accuracy, precision sex etc. Function. Key Words Digital clock ; DS1302; LCD1602;  目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc324262370 摘 要 HYPERLINK \l _Toc324262371 第1章 绪论 PAGEREF _Toc324262371 \h 1 HYPERLINK \l _Toc324262372 1.1单片机的发展史 PAGEREF _Toc324262372 \h 1 HYPERLINK \l _Toc324262373 1.2 单片机的应用 PAGEREF _Toc324262373 \h 1 HYPERLINK \l _Toc324262374 1.3 单片机发展趋势 PAGEREF _Toc324262374 \h 2 HYPERLINK \l _Toc324262375 第2章 系统的硬件设计与实现 PAGEREF _Toc324262375 \h 4 HYPERLINK \l _Toc324262376 2.1 系统概述 PAGEREF _Toc324262376 \h 4 HYPERLINK \l _Toc324262377 2.2模块电路的设计 PAGEREF _Toc324262377 \h 5 HYPERLINK \l _Toc324262378 2.2.1时钟电路 PAGEREF _Toc324262378 \h 5 HYPERLINK \l _Toc324262379 2.2.2液晶LCD160