数字钟设计项目说明指导书.pdfVIP

电子技术综合训练

设计汇报

项目名称：多功效数字钟设计和制作

班级：自动化2班

学号：

姓名：郭琦

指导老师：李晓英

摘要

这次课程设计我题目是多功效电子钟设计和

制作，为了实现电子钟功效我们选择了石英晶体振荡

器、24进制计时器、60进制计数器、显示器、译码器、

TTL门电路组成校时电路。实现了秒脉冲发生电路；

电子钟时、分、秒显示和进位；校时电路。选择74LS160

计时，CD4511译码，LED数码显示管显示，74LS00、

74LS08、74LS32、74LS04实现校时，晶振发生2HZ脉

冲。

关键字：数字钟显示校时译码

目录

摘要·······························II

第一章设计任务和要求·······················1

1.1设计任务···························1

1.2设计要求···························1

第二章系统设计··························2

2.1系统设计方案·························2

2.2系统构思及其工作原理·····················2

第三章元器件选择························3

3.1CD4511显示译码器······················3

3.2晶体振荡器··························6

3.374LS160十进制计数器·····················8

3.474HC04六反相器························9

3.574LS20P2-4输入和非门·····················10

3.674HC084-2输入和门······················12

3.774HC004-2和非门·······················13

第四章单元电路设计························15

4.1“时”、“分”、“秒”发生电路················15

4.2“分”、“秒”之间显示“：”电路················18

4.3译码、显示、计数电路······················19

4.4手动校时电路·························20

4.5整点报时电路·························21

第五章稳压电源设计·························22

5.1设计所需器材和工具·······················22

5.2设计内容及步骤·························22

第六章电路安装、调试和测试····················25

6.1电路安装、调试和测试·····················25

6.2调试过程中出现问题级处理方法·················25

第七章总结和心得体会························27

7.1数字钟在生活中应用······················27

总结······························31

参考文件·······························32

附录Ⅰ································33

第一章设计任务和要求

1.1设计任务

设计一个多功效电子钟

1.2设计基础要求

（1）数字形式显示时、分、秒，在分和秒之间显示“：”，并按1次/秒

速度闪烁；

（2）以二十四小时为一个计时周期；

（3）有校时功效，能够在任何时刻对电子钟进行方便校正；

（4）整点