16乘16LED点阵LED电子显示屏的设计毕业设计论文.doc
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1、本科毕业设计论文题 目 1616点阵LED电子显示屏的设计专业名称 电子信息工程 学生姓名 指导教师 毕业时间 毕业设计论文摘 要本设计是一1616点阵LED电子显示屏设计。单片机是以美国ATMEL 公司生产的40脚单片机AT89C51为核心,介绍了以它为控制系统的LED点阵电子显示屏的动态设计以及开发过程。通过该芯片控制两个行驱动器 74HC164和两个列驱动器74HC595来驱动显示屏显示。该电子显示屏可以显示各种文字或简单图像,全屏一次能显示1个汉字,采用4块88点阵LED显示模块来组成1616点阵显示模式。显示采用动态显示,使得图形或文字能够实现静止、移入移出等多种显示方式。文中详细介
2、绍了LED点阵显示的硬件设计思路、硬件电路各个部分的功能及原理、相应软件的程序设计,以及使用说明等。单片机控制系统程序采用单片机C语言进行编辑,通过编程控制显示点对应LED阳极和阴极端的电平,就可以有效的控制显示点的亮灭。所显示字符的点阵数据可以自行编写(即直接点阵画图),也可从标准字库中提取。LED显示以其组构方式灵活、显示稳定、功耗低、寿命长、技术成熟、成本低廉等特点在个个领域得到了广泛的应用。经实践证明,该系统显示误差小,性能稳定,结构合理,扩展能力强。关键词: LED点阵显示,动态显示,74HC164行驱动,74HC595列驱动IABSTRACTThe design is a 16 1
3、6 dot matrix LED electronic display designs. SCM is the United States produced 40 feet ATMEL AT89C51 microcontroller as the core, introduced to it as the control system LED dot matrix display dynamic electronic design and development process. Control two rows and two columns driver 74HC164 74HC595 d
4、river to drive the display through the chip. The electronic display can display a variety of text or simple images, one can display a full-screen characters , using four 8 8 LED dot matrix display module consisting of 16 16 dot matrix display mode. Display dynamic display , making graphics or text t
5、o achieve a variety of display static, moved out and so on. This paper details the features and principles of the various parts of the hardware design ideas , the hardware circuit LED dot matrix display , the corresponding software program design , and the use of descriptions.SCM control system usin
6、g microcontroller C language program for editing , the corresponding LED anode and the cathode side level displayed by programming control points , you can effectively control the display of point light off . The dot matrix display data characters can prepare themselves ( ie direct dot drawing ) , c
7、an also be extracted from the standard font .LED display with its flexible fabric , shows a steady , low power consumption , long life, mature technology, low cost and so in all fields has been widely used.The practice has proved that the system displays error is small, stable performance, reasonabl
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