毕业设计 基于CD4553的三位半计数器

摘要

摘 要

纵观全球，全世界，全中国，三位半计数器在行业发展中都有至关重要的作用。中国也有很多从外国引进的三位半计数器。作为国人，并且是相关专业的学生，我想尽自己的微薄之力来为祖国该行业服务。

我们知道，CD4553是3位十进制计数器，有1个输出端，要完成3位输出，采用扫描输出方式，通过它的选通脉冲信号，依次控制3位十进制的输出，从而实现扫描显示方式。在本论文中，为了熟悉CD4553的引脚及功能，了解电路的组成和用途，我们可以利用合适的电阻、电容、二极管等器件，并基于CD4553来实现一个三位半计数显示电路功能。

关键字：CD4553 三位半技术显示电路

ABSTRACT

ABSTRACT

Throughout the world, the whole of China, three and a half counter has a crucial role in the development of the industry. China has imported from foreign countries of the three semi-counter. As a people, and related majors, and I tried my own modest in the industry of service for the motherland.

We know that the CD4553 is a three decimal counter, an output, to complete the threeoutput scan utput mode, the strobe pulse signal, in order to control the output of threedecimal, in order to achieve the scan shows. In this paper, in order to be familiar with theCD4553 pin and function of the composition and use of the circuit, we can use theappropriate resistors, capacitors, diodes and other devices based on the CD4553, athree semi-count display circuit function.

Keywords: CD4553 Three semi-skilled display circuit

目录 i

目 录

第一章 绪 论 ................................................................................................................. 1 1.1 计数器概述 ........................................................................................................... 1 1.2 计数器作用 ........................................................................................................... 1 1.3 多功能电子计数器的现状和发展 ....................................................................... 2 第二章 硬件系统设计 ................................................................................................... 3 2.1 CD4553简介 ........................................................................................................ 3 2.2 特性及基本概念 ................................................................................................... 4 2.3 7805简介 .............................................................................................................. 6 2.3.1 7805概述 ...................................................................................................... 6 2.3.2 7805应用电路 .............................................................................................. 7 2.3.3 7805电参数 .................................................................................................. 8 2.4 CD4013介绍 ........................................................................................................ 8 2.4.1

工作原理 ................................................................................................... 9

2.4.2 N/2分频电路 ................................................................................................ 9 2.4.3

特性 ......................................................................................................... 10

2.4.4 CD4013真值表 .......................................................................................... 10 2.5 NE555的介绍 .................................................................................................... 11 2.5.1 2.5.2 2.5.3 2.5.4 2.5.5 2.5.6

简介 ......................................................................................................... 11 主要特点 ................................................................................................. 12 引脚位配置 ............................................................................................. 12 参数功能特性 ......................................................................................... 13 相关应用 ................................................................................................. 13 温度与封装对照表 ................................................................................. 14

2.6 74LS48介绍 ....................................................................................................... 14 2.7 数码管 ................................................................................................................. 18 2.7.1 2.7.2 2.7.3

产品特点 ................................................................. 错误！未定义书签。 技术参数 ................................................................. 错误！未定义书签。 应用领域 ................................................................. 错误！未定义书签。

ii 目录

2.7.4 LED数码管驱动方式 ................................................................................ 20 2.7.5 LED数码管分类 ........................................................ 错误！未定义书签。 2.7.6 LED的光源和优缺点 ................................................ 错误！未定义书签。 第三章 软件系统设计 ................................................................................................. 21 3.1 PROTEUS 简介 ................................................................................................. 21 3.1.1 3.1.2 3.1.3 3.1.4

功能特点 ................................................................................................. 21 基本操作 ................................................................................................. 22 功能模块 ................................................................. 错误！未定义书签。 资源丰富 ................................................................. 错误！未定义书签。

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