数字电路课程设计-可预置的定时显示报警电路

数字电路课程设计-可预置的定时显示报警电路

课程设计任务书

学生姓名： 专业班级： 指导教师： 工作单位：

题 目：可预置的定时显示报警电路

初始条件：

具备电子电路的基础知识和设计能力；具备查阅资料的基本方法；熟悉常用的电子器件；熟悉电子设计常用软件的使用；

要求完成的主要任务：（包括课程设计工作量及其技术要求，以及说明书撰写等

具体要求）

1、设计定时显示报警电路； 2、预置时间最大30S； 3、数码管显示时间；

4、掌握数字电路的设计及调试方法； 5、撰写符合学校要求的课程设计说明书。 时间安排：

十九周一周，其中2天原理设计，3天电路调试

指导教师签名： 年 月 日

系主任（或责任教师）签名： 年 月 日

数字电路课程设计-可预置的定时显示报警电路

目 录

1.电路原理设计···················································· 1 1.1设计要求····················································· 1 1.2原理框图····················································· 1 2.芯片介绍························································ 2 2.1 74LS192······················································ 2 2.2 74LS00······················································· 2 2.3 74LS48······················································· 3 2.4 555定时器···················································· 4 3.单元电路设计···················································· 5 3.1 递减计数器·················································· 5 3.2 置数控制电路················································ 5 3.3 时钟信号控制电路············································ 5 3.4 译码显示电路················································ 6 3.5 报警电路···················································· 6 3.6 秒脉冲发生电路·············································· 6 4.电路图设计···········································& …… 此处隐藏：3322字，全部文档内容请下载后查看。喜欢就下载吧 ……