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FPGA矩阵键盘课程设计.pdf
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FPGA 课程设计报告
项目名称
专业班级
学生姓名
指导教师
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基于 FPGA 的 4*4 矩阵键盘的设计
通信 1
张
2016 年 7 月 10 日
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摘 要
本课程设计提出了基于 FPGA 的 4*4 矩阵键盘的设计,主要是在软件 Quartus II 9.0
这个环境中,以硬件描述语言 Verilog 进行编写程序,从而完成矩阵键盘的相关设计。
主要由矩阵式键盘电路、显示电路等组成,实现过程是通过行扫描输入随机信号,列扫
描判断哪一个键被按下,并最后由数码管显示该按键。此次课程设计完成了 4*4 矩阵键
盘控制 LED 数码管显示系统的设计,该设计具有灵活性强,易于操作,可靠性高,广
泛应用于各种场合的特点,是进行按键操作管理的有效方法,它可以提高系统准确性,
有利于资源的节约,降低对操作者本身的要求,并能正确、实时、高效地显示按键信息,
以提高工作效率和资源换利用率的意义
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关键词:数码管; 矩阵键盘;按键;显示电路
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Abstract
This course is designed based on FPGA is proposed 4 * 4 matrix keyboard design,
mainly in the Quartus II software 9.0 this environment, with the Verilog hardware description
language program, so as to complete the related design of matrix keyboard. Main matrix
keyboard circuit, display circuit and so on, complete the 4 * 4 matrix keyboard control LED
digital tube display system design, the design has strong flexibility, easy operation, high
reliability, widely used in various occasions. Into 4 * 4 matrix keyboard control LED digital
tube display system design, design flexibility is strong, easy to operate, high reliability,
widely used in various occasions. Matrix keyboard control system, can improve efficiency,
and is an effective method to manage the keystrokes, it can improve the system accuracy, and
is conducive to resource saving and reduce the requirement of the operator itself, and
correctly, real-time and efficient to show the key information, in order to improve the work
efficiency and the utilization ratio of resources in meaning.
Keywords
:
Digital tube; Matrix keyboard; The key; Disply circuit
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目 录
摘 要 ·······································································································I
Abstract ·····································································································II
第 1 章 绪论 ····························································································· 1
1.1 课题背景 ······················································································· 1
1.2 国内外发展现状 ································ ·············································· 1
1.3 本文主要研究内容 ··········································································· 1
第 2 章 软件及语言简介 ································ ·············································· 2
2.1 Quartus 软件简介 ·························3
2.2 Verilog 语言简介 ·························4
2.2.1 Verilog 语言的主要功能·························································· 4
2.2.2 Verilog 语言设计数字系统的特点 ···············4
第 3 章 4*4 矩阵键盘的原理································································ ········· 6
3.1 4*4 矩阵式键盘 ··························6
3.2 总体结构·····························6
3.2.1 LED 数码管································ ············································ 8
3.2.2 键盘结构 ·············································································· 9
3.3 键盘扫描·····························9
3.4 矩阵键盘接口电路的原理······················9
第 4 章 程序调试 ······················································································ 11
4.1 流程图····························· 11
4.2 程序结果讨论·························· 11
第 5 章 波形仿真及讨论 ································ ·············································13
5.1 波形结果···························· 13
5.2 结果讨论···························· 14
结论·································· 15
参考文献································ 16
附录程序································ 17
致谢·································· 19
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