基于单片机动态电子广告牌设计.doc

本科生毕业论文（设计） 题目：基于单片机的动态电子广告牌设计 学 院 电子信息工程学院 学科门类 工 学 专 业 电子信息工程 学 号 姓 名 指导教师 摘 要 动态电子广告牌是一种基于LED的显示屏。基于LED的显示屏是由几十--几十万个LED像素点均匀排列组成。它是一种通过控制LED的显示方式，用来显示字符、图形、图像、视频等各种信息的显示屏幕。 LED显示屏可分为图文显示屏与视频显示屏，均由LED矩阵模块组成。图文显示屏可与计算机通信并同步显示各种字符；视频显示屏采用微机控制技术，图文并茂，以实时、同步、清晰等特点播放各种信息，还可显示录像、电视、动画以及现场实况。LED显示屏所显示画面色彩鲜艳亮丽，立体感强，广泛应用于商场、宾馆、医院、车站、码头、机场、银行、证券市场、建筑市场等公共场所。 LED显示屏具有如下特点：1.可实现超高密度；2.混色好；3.可靠性能强；4.可视角度大；5.通透性高；6.亮度高等。 LED显示屏可以动态显示数字、文字、图像；可以广泛应用于室内外环境，是投影仪、液晶屏无法比拟的。 LED具有：工作电压低、功耗小、寿命长、耐冲击等特点，故LED显示屏功耗低，性能稳定。 关键词：LED 半导体发光二极;单片机；串并行通信Abstract Dynamic electronic billboard is a based on LED display. Based on LED display is composed by the dozens, hundreds of thousands of LED pixels are evenly arranged. It is a kind of control led by the display, to display characters, graphics, images, video and other information on the display screen. LED display can be divided into graphic display and video display, are composed of LED matrix module, graphic display can and computer communication and synchronous display a variety of characters; computer control technology is adopted in the video display, illustrations, in real-time, synchronization, the characteristics of clear play each kind of information, also can display the video, television, animation and live, LED display shows screen bright color, three-dimensional sense of strong, widely used in shopping malls, hotels, hospitals, railway stations, wharves, airports, banks, securities market and building market in public places. LED display has the following characteristics: 1 to achieve ultra-high density; 2 mixed color good; 3 reliable performance; 4 visual angle of view; 5 high permeability; 6 brightness. LED display can dynamically display numbers, text, images; can be widely used in indoor and outdoor environment, is the projector, LCD screen can not match. LED has the characteristics of low operating voltage, low power consumption, long service l