基于单片机的广告灯程序与电路设计毕业论文.doc

摘 要 随着现代电子技术的迅速发展，各种各样的LED显示屏、广告灯层出不穷，它们已被广泛地应用于商业市场的各个领域。LED显示屏因其亮度高、方便维护和应用灵活等优点，给我们的生活带来很大便利，同时它也具有很大的开发价值。 本文设计是从实际应用角度出发，针对当前市场上流行的LED产品的应用领域而设计制作的多功能8*8点阵LED广告灯程序。全文介绍了以单片机STC89C54RD+为控制系统的LED点阵电子显示屏的动态设计和开发过程。该电子显示屏可以显示各种文字，全屏能显示1个汉字或图案，采用6块8*8点阵LED显示模块，使文字能够实现静止、移入移出等多种动态显示方式。 单片机控制系统程序采用C语言进行编辑，通过编程控制各显示点对应LED阳极和阴极端的电平，就可以有效的控制各显示点的亮灭。并用串口实现硬件与PC的通信。 关键词： 广告灯 LED点阵 STC89C54RD+ 动态显示 C语言 串行通信 Abstract This paper probes into the design of multi function 8 * 8 LED dot matrix advertising lights procedure in the wake of the popularity of application of LED products from the perspective of practical function. It highlights the dynamic design and development process of dot matrix electronic display screen, based on the microcontroller STC89C54RD control system, which could display a variety of text, a full-screen display Chinese characters or patterns of 6 sectors of 8 * 8 dot matrix LED display module to guarantee the mode of static, into and out of various dynamic display . Along With the prompt advancement of modern electronic technology, there is a progressive emergency of a variety of LED screen displays and advertising lights as well which have been exploited extensively in diverse regions of the commercial market. Due to the advantages of it’s characteristics of high brightness, straightforward maintenance and flexible application, LED screen display brings about considerable convenience to us; and meanwhile, it additionally is of great value for development. Single chip control system employs edited program as a basis of C language to control individual display point corresponding to the LED anode and cathode of the level, in that you can efficiently dominate the flash of respective display point, consequently serial communications between hardware and PC could be attainable. Key words: advertising light LED dot matrix STC 89C54RD+ dynamic display The C Programming Language Serial Communications 目 录 第一章 绪 论 1 1.1 课题背景 1 1.1.1 选题背景