[指南]数字电路课程设计-可预置的准时显示报警电路.doc

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 11122 1 1 1 2 2 2 3 4 5 5 5 5 6 6 6 7 7 7 8 8 8 9 10 10 10 11 12 1.电路原理设计···················································· 1.1设计要求····················································· 1.2原理框图····················································· 2.芯片介绍························································ 2.1 74LS192······················································ 2.2 74LS00······················································· 2.3 74LS48······················································· 2.4 555定时器···················································· 3.单元电路设计···················································· 3.1 递减计数器·················································· 3.2 置数控制电路················································ 3.3 时钟信号控制电路············································ 3.4 译码显示电路················································ 3.5 报警电路···················································· 3.6 秒脉冲发生电路·············································· 4.电路图设计······················································ 4.1 电路原理图·················································· 4.2 电路原理介绍················································ 5.电路仿真························································ 5.1 绘制电路图·················································· 5.2 元件设置···················································· 5.3 仿真结果···················································· 6.制作电路························································ 6.1 生成材料清单················································ 6.2 焊接电路···················································· 7.课程