1、 毕 业 设 计（论文） 题 目：基于单片机定时闹钟系统设计 系 别：信息工程系 专 业：电气自动化技术 班 级：09 自动化 2 班 I 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
2、等功能。 关键字关键字：数字时钟数字时钟；DS1302；LCD1602;AT89S52 II 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 dis
3、play 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, thro
4、ugh 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 第一章 引言
