您现在的位置:网站首页答辩论文工学论文电子论文

定时器的设计

  • 简介:摘要:本论文主要论述了定时器的设计原理。用传统的电子电路设计方法。侧重于模拟和数字电路构成的电子电路设计。由分析电路系统的功能、分析技术指标、给出系统框图、完成总体方案设计4个过程组成,建立一个完整的系统构概念。灵活运用了Protel 99仿真软件...
    • 请与管理员联系购买资料 QQ:5739126
  • 论文简介
  • 相关论文
  • 论文下载

摘要:本论文主要论述了定时器的设计原理。用传统的电子电路设计方法。侧重于模拟和数字电路构成的电子电路设计。由分析电路系统的功能、分析技术指标、给出系统框图、完成总体方案设计4个过程组成,建立一个完整的系统构概念。灵活运用了Protel 99仿真软件对模拟和数字电子电路在虚拟平台上进行仿真和分析,在实验室虚拟环境下进行仿真实验,加强掌握软件分析和测试的能力。

关键词:振荡,分频,计数,译码,显示

 

 

                     Abstract

      The paper mainly elaborated the timer principle of design. the method with the traditional electronic circuit.was designs The electronic circuit design which constitutes in the simulation and the digital circuit was stressds.By the analysis of circuitry function, the analysis of technical specification,  the system diagram, was given the overall concept to design 4 processes was composed,  A complete system construction concept for oneself was establied. the Protel 99 simulation softwares to simulate nimbly carries on the simulation and the analysis with the numeral electronic circuit in the hypothesized platform was atilized, It enhanced own capility to  carry on the simulation experiment under the laboratory hypothesized environment and strengthened my capility to grasp the software analysis and test ability.
     
KeyWord:Vibration,frequencydivision,counting,decoding, demonstration.

 

 

目录

1 引言........................................................................................................................................6
2 设计要求 7
3 原理框图 7
4 元器件介绍..............................................................................................................................
     4.11 CD四2输入与非门..................................................................................................7    
     4.12 双四输入与非门.......................................................................................................8   
     4.13 CD4518 双BCD同步加计数器..............................................................................8
     4.14 CD40192可预置可逆计数器(双时钟).....................................................................9
     4.15 CD4055BCD七段译码器/液显示驱动器...............................................................10
     4.16 74LS74双D触发器.................................................................................................10
     4.17 555定时器................................................................................................................10
     4.18 电阻器......................................................................................................................10
     4.19 电容器......................................................................................................................10
     4.20 二极管......................................................................................................................10
5 定时器的设计..........................................................................................................................
     5.11 电源电路...................................................................................................................11
     5.12 1S发生电路.............................................................................................................12
5.13 1MIN信号发生电路...............................................................................................13
5.14 计数器....................................................................................................................13
5.14译码器........................................................................................................................14
5.15显示器........................................................................................................................15
     5.16 0状态锁定..................................................................................................................16
     5.17报时电路.....................................................................................................................17
     5.18 拨码定时电路...........................................................................................................19
6 系统综合电路..........................................................................................................................20
7 设计心得: ..21
参考文献: ............22

 

查看评论 已有0位网友发表了看法
  • 验证码: