数电课程设计：数字钟.doc
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课 程 设 计
课程名称 数字电子技术 课题名称 多功能数字钟 专 业 自动化 班 级 1503 学 号 201501020302 姓 名 汤伟明 指导老师 程春红
2016 年 11 月 21 日
电气信息学院
课程设计任务书
课题名称 多功能数字钟 姓 名 汤伟明 专业 自动化 班级 1503 学号 02 指导老师 程春红 课程设计时间 2016年 11 月 21 日- 2016年 12 月 02 日 任务及要求
任务：3．具有整点报时功能，整点前10秒发光二极管闪烁5次，周期为2秒。4．设计振荡器。
要求：
1.康华光主编. 电子技术基础（数字部分），高等教育出 版社。
2.阎 石主编. 电子技术基础（数字部分），清华大学出版社。
3.任为民主编. 电子技术基础课程设计，中央广播电视大学出版社。
4.彭介华主编，电子技术课程设计指导，高等教育出版社。
5.《电子线路设计、实验、测试》谢自美主编 华中理工出版
目 录
课程设计的任务要求·······································1
1.1、设计内容····················································1
1.2、多功能数字钟设计要求········································1
设计方案·················································1
2.1、总体设计方案················································1
单元电路（子模块，子程序）分析··························2
3.1、脉冲发生电路···············································3
3.2、计时电路···················································4
3.2.1、分秒计时电路························································4
3.2.2、时计时电路··························································5
3.2.3、时、分、秒计时功能的实现············································6
3.2.4、译码器驱动电路及数码管显示电路······································7
3.2.5、校时电路····························································8
3.2.6、整点报时电路·····························9
系统仿真/测试···········································11
4.1、整点报时电路仿真···········································11
电路安装调试···········································12
元件清单···············································12
6.1、元件清单··················································12
6.2、各芯片管脚图及功能表···················12
6.2.1、555定时器的内部结构························12
6.2.2、同步十进制计数器74ls160功能表及引脚图。··············14
附页：总电路图······························15
总 结················································16
一、课程设计的任务要求：
1.1、设计内容
本项目利用中小规模集成芯片设计并制作多功能数字钟。以同步十进制计数器为核心，结合多谐振荡器、译码器、门电路及数码管共同组成可以实现准确计时、校时、报时的多功能数字钟。
1.2、多功能数字钟设计要求
1.2.1、准确计时，以数字形式显示时(00～23)、分(00～59)、秒(00～59)的时间。
1.2.2、具有校时功能。
1.2.3、整点报时。
二、设计方案：
2.1、总体设计方案
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