毕业设计（论文）基于单片机LED滚动显示系统设计.doc

三门峡职业技术学院 信息工程系 毕 业 设 计 论 文 毕业设计项目： 基于51单片机的LED滚动显示系统 专 业： 计算机应用（嵌入式方向） 年 级： 09 学 号： 姓 名： 指 导 老 师： 摘 要 LED显示屏是一种通过控制半导体发光的显示方式，它是由很多个红色的发光二极管组成，靠灯的亮灭来显示字符。LED显示屏分为数码显示屏、图文显示屏和视频显示频。均由LED矩阵块组成。目前由于LED显示屏造价昂贵，主要应用于比较较高档的场所，主要集中在城市的繁华场所。在举办的2010年上海世博会’未来各项大项运动赛事等新增需求，都将促使LED显示屏的大规模发展。此外，已架设的大型LED显示屏幕梅10年将历经一次换机潮，随着人们生活水平的提高，户外LED显示屏将逐渐应用于各个行业。 本设计主要实现16*16LED显示屏对文字及简单图像的显示，扩展功能有实时钟及实时温度采集，并通过LCD1602及LED点阵屏静态及滚动显示。设计分为三大步，分别是软件设计，硬件仿真及实物制作，兼顾理论性及实用性，充分体现了理论与实践相结合，设计过程中不仅学到了很多有用的知识，也增长了自己的专业技能，提高了自己的动手能力。 关键字： LED 显示屏 发光二极管 半导体 Abstract LED display is the display mode controlling by the semiconductor light emitting diode, it probably looks like that composition by a number of led is usually a red light-emitting diodes which show character by the LED on and off , LED display is divided into Digital display, Graphic display and Video display, which is compositioned by LED matrix block, As the cost of LED display expensive currently, mainly used in relatively high places, concentrated in the cities busting place, being held in the Shanghai Word Expo 2010, Future large-scale sporting events and other additional requirements will promote large-scale development of LED display, In addition, the original large-scale LED display screen will be updating once per 10 years, with the improvement of peoples living standard, outdoor LED display will gradually be used in various industries. The main achievement of this design is 16*16 LED display show the text and simple image, the extension function include real-time clock and real-time temperature measurement which is displayed by LCD1602 and LED dot matrix display screen. This design is divided into three big steps, which is software design, hardware simulation and in-kind production, fully reflects the combination of theory and practice. From th