基于51单片机点阵式电子广告牌的设计.doc

摘 要 当今世界，电子技术迅猛发展，点阵式显示器件作为现代信息显示的重要媒体，在金融证券、体育、机场、交通、商业、广告宣传、邮电电信、指挥调度、国防军事等许多领域中得到了广泛应用。因此点阵式显示器件的研制、生产也的到了迅速的发展，并逐步形成产业，成为光电子行业的新兴产业领域。由于LED电子显示屏具有所显内容信息量大,外形美观大方,操作使用方便灵活.适用于火车,汽车站,码头,金融证券市场,文化中心,信息中心体育设施等公共场所.该项目广泛涉及了计算机及电子技术中的电源技术,单片机技术,数据通讯技术,显示技术,存储技术,系统软件技术,接口及驱动等技术.我国经济发展迅猛,对信息传播有越来越高的要求.可以相信,LED电子显示屏以其色彩鲜亮夺目,大的显示信息量,寿命长,耗电量小,重量轻,空间尺寸小,稳定性高,易于操作,安装和维护等特点,将在社会经济发展中扮演越来越重要的角色。利用单片机对整个系统进行总体控制，进行显示所要显示的字符。显示方式分为三种：逐字显示、上滚显示、左滚显示，其中显示字模数据由单片机输入显存，点阵的点亮过程有程序控制，由驱动电路完成，点阵采用单色显示，该显示器电路的特点是：点阵的动态显示过程占用时间比较短，亮度比较高，而且亮度可以改变电阻进行调节。 本文以Proteus为软件平台，设计制作一套51系列单片机实验系统。 【关键词】单片机 点阵 LED电子显示屏 Abstract In todays world, the rapid development of electronic technology, dot-matrix display device as a modern information display of the important media, in the financial securities, sports, airport, transportation, commercial, advertising, post and telecommunications, command and control, national defense military, and many other areas have been widely applied. So dot-matrix display devices in the development, production and to the rapid development, and gradually formed a optoelectronics trade industry, the new industry fields. Because LED electronic display has shown informative content, a beautiful appearance, convenient in operation is flexible. Apply to the train, bus station, wharf, financial securities market, cultural center, information center sports facilities in other public places. This project involves a wide computer and electronic technology of power technology, single chip microcomputer, data communication technology, display technology, storage technology, system software technology, interface and drive technology. Chinas economic development of information transmission has rapidly, and more and more high requirements. Can believe that LED electronic display by its color bright is dazzing, large display information, long life, small power consumption, light weight, small size, high stability, space, easy to operate, installation and maintenance and other charact