led点阵广告牌系统设计-论文.doc

I 论文题目: LED 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 AT89S5 1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 AT89S5 1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】 AT89S5 1单片机; LED 点阵汉字; 【论文类型】应用型 Title : LED Dot billboards System design Major : Electronic and Information Engineering Name : LiYa Signature: Supervisor : Zhang Xiao Li Signature: II ABSTRACT With the LED technology matures, many fields of automotive, advertising, and daily life can be seen the figure of the LED dot matrix display .At present , high-brightness LEDs can produce red, green and blue light and can form a large monochromethe two-color and color LED display .mon application is the image of text display and weather forecasts . In addition the prevalence of the use of LED display advertising signs. Therefore, the LED has a wide application in various fields. This article describes a microcontroller-based LED dot matrix billboard system and the AT89S51 microcontroller is the core of Chinese characters of LED dot matrix display system Th e article give a detailed description s eparately from the hardware design and software .The hardware part is made of the line driver module , the column driver module and LED dot matrix display module and software part simple liquidity of the C programming language . So can present a different display mode ,a variety ofdot matrix characters display and different space system is control led by AT89S51 microcontroller . The LED dot matrix display system using this method design ed is low-cost and easy to implement. 【 Key words 】 AT89S5 1 Single-chip puter (SCM) ; LED Dot matrix characters 【 Type of Thesis 】 Applied type 目录 1 绪论.....................................................................................................