PAGE\*MERGEFORMATI电子技术综合训练设计报告项目名称：多功能数字钟设计与制作班级：自动化2班学号：13220217姓名：郭琦指导教师：李晓英PAGE\*MERGEFORMATII摘要这次课程设计我的题目是多功能电子钟的设计与制作，为了实现电子钟的功能我们选用了石英晶体振荡器、24进制计时器、60进制计数器、显示器、译码器、TTL门电路组成的校时电路。实现了秒脉冲发生电路；电子钟的时、分、秒显示与进位；校时电路。选用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PAGE\*MERGEFORMATIV目录摘要·······························II第一章设计任务和要求·······················11.1设计任务···························11.2设计要求···························1第二章系统设计··························22.1系统设计方案·························22.2系统构思及其工作原理·····················2元器件的选择························33.1CD4511显示译码器······················33.2晶体振荡器··························63.374LS160十进制计数器·····················83.474HC04六反相器························93.574LS20P2-4输入与非门·····················103.674HC084-2输入与门······················123.774HC004-2与非门·······················13单元电路设计························154.1“时”、“分”、“秒”发生电路················154.2“分”、“秒”之间显示“：”电路················184.3译码、显示、计数电路······················194.4手动校时电路·························204.5整点报时电路·························21稳压电源的设计·························225.1设计所需器材和工具·······················225.2设计内容及步骤·························22电路的安装、调试与测试····················256.1电路的安装、调试与测试·····················256.2调试过程中出现问题级解决方法·················25总结与心得体会························277.1数字钟在生活中的应用······················27总结······························31参考文献·······························32附录Ⅰ································33PAGE\*MERGEFORMAT35第一章设计任务和要求1.1设计任务设计一个多功能电子钟1.2设计基本要求（1）数字形式显示时、分、秒，在分和秒之间显示“：”，并按1次/秒的速度闪烁；（2）以24小时为一个计时周期；（3）有校时功能，能够在任何时刻对电子钟进行方便的校正；（4）整点时刻通过扬声器给出提示（发挥部分）；（5）按照以上技术要求设计电路，使其具备所要求的逻辑功能。对设计的电路用Multisim进行必要的仿真、计算参数、安装、调试电路、绘制电路图；第二章系统设计2.1系统设计方案拿到课题后，我们首先将《数字电子技术》中有关本次设计的内容复习了一遍，比如七段译码显示器、计数器、振荡器等等。然后根据设计要求，我去图书馆查阅了相关的资料，对整体框架做了一个初步的了解。做完准备工作后就正式开始设计、仿真及绘图。先将秒、分和时分别设计出来，再进行整体排版、连接。2.2系统构思及其工作原理这次设计让我熟练掌握了课本