PAGE\*MERGEFORMAT1LED点阵广告牌系统设计摘要随着LED技术日趋成熟，在汽车、广告、日常生活等诸多领域都可以看见LED点阵显示屏的身影，目前高亮度LED已可以产生红、绿、蓝三原色的光，可以组成大型单色、双色和彩色LED显示屏，常见的应用是文字显示及气象预报图像，另外，也盛行使用LED显示屏作为广告招牌。因此，LED在各个领域有广泛的应用。本文介绍了一种基于单片机的LED点阵广告牌系统，系统是以AT89S51单片机为核心实现LED点阵汉字的显示。本文分别从硬件设计和软件实现给予详尽的描述。硬件部分由行驱动模块、列驱动模块以及LED点阵显示模块组成；软件部分采用简单流通性强的C语言编程，实现不同的显示方式、显示不同的点阵汉字、调速。此LED点阵显示系统是基于AT89S51单片机的控制，采用这种方法设计的LED点阵显示系统成本低、易于实现。【关键词】AT89S51单片机；LED点阵汉字；【论文类型】应用型Title:LEDDotbillboardsSystemdesignMajor:ElectronicandInformationEngineeringName:LiYaSignature:Supervisor:ZhangXiaoLiSignature:ABSTRACTWiththeLEDtechnologymatures,manyfieldsofautomotive,advertising,anddailylifecanbeseenthefigureoftheLEDdotmatrixdisplay.Atpresent,high-brightnessLEDscanproducered,greenandbluelightandcanformalargemonochromethetwo-colorandcolorLEDdisplay.Thecommonapplicationistheimageoftextdisplayandweatherforecasts.InadditiontheprevalenceoftheuseofLEDdisplayadvertisingsigns.Therefore,theLEDhasawideapplicationinvariousfields.Thisarticledescribesamicrocontroller-basedLEDdotmatrixbillboardsystemandtheAT89S51microcontrolleristhecoreofChinesecharactersofLEDdotmatrixdisplaysystemThearticlegiveadetaileddescriptionseparatelyfromthehardwaredesignandsoftware.Thehardwarepartismadeofthelinedrivermodule,thecolumndrivermoduleandLEDdotmatrixdisplaymoduleandsoftwarepartsimpleliquidityoftheCprogramminglanguage.Socanpresentadifferentdisplaymode,avarietyofdotmatrixcharactersdisplayanddifferentspacesystemiscontrolledbyAT89S51microcontroller.TheLEDdotmatrixdisplaysystemusingthismethoddesignedislow-costandeasytoimplement.【Keywords】AT89S51Single-chipmicrocomputer(SCM);LEDDotmatrixcharacters【TypeofThesis】Appliedtype目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc327285599"1绪论PAGEREF_Toc327285599\h1HYPERLINK\l"_Toc327285600"1.1LED点阵汉字显示系统背景PAGEREF_Toc327285600\h1HYPERLINK\l"_Toc327285601"1.2LED点阵汉字显示系统概述PAGEREF_Toc327285601\h2HYPERLINK\l"_Toc327285602"2LED点阵汉字显示系统总体方案设计PAGEREF_Toc327285602\h3HYPERLINK\l"_Toc327