基于单片机的多点阵LED字符显示屏的设计.doc

2014 届毕业设计说明书 基于单片机的多点阵LED字符显示屏的设计与制作 院 、 部： 电气与信息工程学院 学生姓名： 饶伟 指导教师： 桂友超 职称 讲师 肖金凤 职称 副教授 专 业： 电气工程及其自动化 班 级： 电气本1004班 完成时间： 2014年5月 摘 要 随着显示器件与技术的进发展，LED显示屏是模块或像素单元的。计算机技术的发展，LED数码管能够在减少驱动器的情况下直接被驱动LED数码管具有可靠性、寿命、、成本、适应能等特点，在平板显示领域扮演着的角色，且发展空间。ABSTRACT With the further development of display devices and display technologies , as an important media -screen display system has been widely used in the national economy. LED display is a LED dot matrix module or pixel units. The rapid development of computer technology , makes digital LED can be driven directly in the drive to reduce the case . LED digital tube with high reliability, long life , cost-effective , low-cost, adaptable characteristics, making it the field of flat panel display has been playing a pivotal role in the future development of space and it is also quite large. The graduation project is a microcontroller -based control center, with four 8 × 8 LED dot matrix display combination can produce a 16x16 dot matrix LED display . Requirements of each light-emitting diode display brightness and uniform enough , shows a steady , clear graphics or text, which shows a graphic or text should be able to have a rest , moved out of the results. Dot matrix display with a dynamic display, dynamic progressive scan turns lights. Dot matrix display using serial transmission of data transfer methods. This article focuses on the LED display is composed of programming hardware and software parts of the circuit , LED dot matrix display function realization . Key words: 16 × 16 dot matrix; SCM；LED display目 录 1 绪论 1 1.1设计的背景 1 1.2 LED点阵显示屏的发展趋势 2 2 整体设计方案 3 2.1 设计所实现的功能及构成 3 2.2 显示模块的方案 3 2.2.1静态显示方式 3 2.2.2动态显示方式 3 2.3数据传输方案论证 4 3 硬件电路的构成 5 3.1设计框图及介绍 5 3.2 51系列单片机 5 3.3单片机的最小应用系统 8 3.4 LED点阵 9 3.5 LED显示方式 10 3.6点阵的移动 11 3.7 点阵颜色的转换 14 3.8 LED点阵列驱动电路 15 4软件设计 18 4.1单片机延时