电子课程设计总结报告 数字电子时钟

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1、电子技术课程设计报告设计课题:数字电子钟的设计姓名:学院:机械与电子工程学院专业班级:电信班学号:设计时间指导教师:22摘要数字电子钟是一种用数字显示时﹑分﹑秒的记时装置，与传统的机械钟相比，它具有走时准确﹑显示直观﹑无机械传动装置等优点，因而得到了广泛的应用：小到人们的日常生活中的电子手表，大到车站﹑码头﹑机场等公共场所的大型数显电子钟等。本课程设计要通过简单的逻辑芯片实现数字电子钟。数字电子钟从原理上讲是一种典型的数字电路的应用，其中包括了组合逻辑电路和时序电路。要点在于用555芯片连接输出为一秒的多谐振荡器用于时钟的秒脉冲,

2、用74LS160(10进制计数器)74LS00(与非门芯片)等连接成60和24进制的计数器,再通过七段数码管显示，构成了简单数字电子钟。关键词：数字电子钟、555芯片、计数器、数码管22目录摘要·········································································································1第1章概述····························································

3、·····························3第2章课程设计任务及要求····························································42.1设计任务···············································································42.2设计要求·······································································

4、········4第3章系统设计··············································································53.1方案论证················································································53.2系统设计··············································································

5、···53.2.1结构框图及说明·························································53.2.2系统原理图及工作原理·············································63.3单元电路设计·······································································73.3.1单元电路工作原理·······································

6、·······················73.3.2元件参数选择······································································10第4章修改测试·················································································14第5章软件仿真································································

7、·················155.1仿真电路图··············································································155.2仿真过程··················································································165.3仿真结果·······························································

8、···················17第6章设计总结···················································································19第7章使用仪器设备清单