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毕业设计（论文）题目:基于单片机的LED点阵显示屏设计系别:班级:学号:姓名:指导教师:职称：起讫日期:基于单片机的LED点阵显示屏设计摘要：在这个信息化社会中，人们对信息的传达需求激增，点阵式LED显示屏成为重要的传播媒体。金融证券、体育场所、交通运输、商业广告、邮电电信及学校教育等领域都得到了广泛的应用。因此，点阵式LED显示屏的研发、设计、生产获得迅速的发展，并且成为了产业。点阵式LED显示屏的显示效果、功率环保也不断优化。点阵式LED屏具有较大的信息显示量、寿命长、功耗小、重量轻、空间尺寸小及造价低等优点。本设计通过使用单片机为控制核心，设计一款点阵式LED屏。同时，使用电脑VB编写的上位机通过串口通信对点阵显示屏的信息更新、显示速度控制等。关键词：LED点阵单片机VB上位机串口通信LeddotmatrixdisplaybasedonsinglechipdesignTanJin-biao2007ComputerScienceandTechnologyMajor,DepartmentofMathematicsandComputerScience,SanmingUniversityAbstract：Inthisinformationsociety,peoplesurgeindemandforinformationcommunication,dotmatrixLEDdisplayhasbecomeanimportantmedia.Financialsecurities,sportsvenues,transportation,advertising,postandtelecommunicationsfieldsoftelecommunicationsandschooleducationhavebeenwidelyused.Therefore,thedotmatrixLEDdisplayR&D,design,productionfortherapiddevelopmentandbecometheindustry.LEDdotmatrixdisplayscreen,greenpowerhasalsobeenoptimized.LEDdotmatrixdisplayscreenwithalargeamountofinformation,longlife,lowpowerconsumption,lightweight,smallsizeandcostofspaceislow.ThedesignofthecontrolbyusingtheMCUcore,designadotmatrixLEDdisplay.Meanwhile,theuseofcomputerPCVB,dot-matrixdisplaythroughtheserialportcommunicationontheinformationupdatedtoreflectthespeedcontrol.Keywords：LEDdotmatrixSCMUppercomputerSerialcommunication目录第一章绪论.............................................................11.1选题背景..........................................................11.2LED点阵显示屏的发展历史及现状.......................................11.2.1发展历史....................................................11.2.2我国LED兴起的现状............................................11.3本课题研究内容....................................................21.4主要实现功能......................................................2第二章总体设计..........................................................22.1单元显示...........................................................22.2滚屏的实现..........................................................22.3关于可扩展性........................................................32.4关于显示内容的更新...................................................32.5系统基本原理........................................................3第三章硬件电路设计......................................................43.1单片机的选用........................................................43.1.151单片机的认识....................................................43.1.2STC89S52RC单片机结构...........................................53.1.3STC89S52RC单片机引脚功能........................................53.2单片机最小系统......................................................63.2.1单片机电源电路.................................................63.2.2单片机的振荡电路设计............................................73.2.3单片机的复位电路设计............................................83.3LED点阵屏驱动电路...................................................83.3.1LED点阵屏.....................................................83.3.2驱动点阵屏芯片.................................................93.3.3点阵屏驱动电路连接.............................................103.4串口通信电路设计...................................................113.4.1MAX232芯片...................................................113.4.2串口硬件电路设计..............................................11第四章单片机软件设计......................................................124.1点阵屏的显示程序...................................................124.1.1驱动芯片的控制程序............................................124.1.2点阵屏显示的移动算法...........................................134.1.3点阵屏动态扫描显示.............................................154.2串口通信程序设计....................................................154.3控制函数程序设计....................................................17第五章上位机软件设计......................................................175.1汉字点阵的编码原理及提取方法.........................................185.1.1汉字点阵的编码原理.............................................185.1.2汉字字模的提取方法.............................................185.2界面的设计.........................................................195.3VB程序编写........................................................205.3.1字模转换程序..................................................205.3.2串口传输程序..................................................205.3.3控制按钮程序..................................................20第六章设计仿真...........................................................216.1Proteus仿真软件简介................................................216.2Proteus仿真软件的使用..............................................216.3Proteus仿真过程....................................................22第七章总结...............................................................237.1工作总结...........................................................237.2个人收获...........................................................24致谢.....................................................................24参考文献.................................................................25附录1：总电路原理图.......................................................27附录2:单片机程序..........................................................272011届计算机科学与技术（嵌入式方向）毕业论文（设计）1第一章绪论1.1选题背景LED点阵屏是重要的信息传递媒体，在多个行业领域得到应用。如车票销售点的班车