发布时间：2015-01-18 来源：人大经济论坛

自动化专业论文范文 1 绪论1 1.1 电子显示屏国内外现状1 1.2 电子显示屏的发展趋势1 1.3 增宽双色屏设计的设计思路2 2 LED图文显示屏的特点4 2.1 图文显示屏的特点4 2.2 汉字显示的原理4 3 所需具体器件的属性6 3.1 74LS2456 3.2 74LS5956 3.3 74LS1548 3.4 49539 3.5 8X8 LED10 3.6 74LS37312 3.7 74LS16513 3.8 89C5114 3.9 6264RAM15 3.10 28C64ROM16 3.11 MAX23217 3.12 电解电容和电容17 3.13设计用到的型号17 4 显示驱动单元的硬件电路设计18 4.1 扫描驱动18 4.2 设计思路18 4.3 单元结构20 4.4 双色显示控制的逻辑电路实现20 5 显示控制电路设计24 5.1 设计思路24 5.2 双色控制思路25 6 软件程序26 6.1 程序的基本实现26 6.2 静态显示27 6.3 动态显示27 6.4 系统软件调试28 7 总结30 致谢31 参考文献32 附录：程序33 摘 要 随着信息社会的到来，全彩色、高分辨率的LED大屏幕电子显示屏由于其色彩丰富、亮度高且可调、能够进行插播和画面编辑等突出的特点在各行各业的应用变的越来越普遍。所以一般的LED点阵双色显示屏，可显示汉字和各种常见字符等信息，能适用于公共场合对公众所需信息的发布。 这次设计的LED点阵双色显示屏是通过89C51控制其显示的，可以任意输出某一种颜色也可以同时输出两种颜色；可以改变动态显示的移动速度；也可以改变显示方式（左移、下移、对角移动等）。 理解显示屏的控制原理以及显示原理是设计的基础。此次双色显示屏的设计是在单色屏的基础上发展而来的，所以在增加宽度情况下，本设计的重点在于双色控制电路的设计以及显示屏的上下分屏。 关键词：LED双色显示屏；89C51；双色控制电路 ；上下分屏 Abstract With the advent of the information society, full-color, high-resolution large-screen LED display panels because of its rich color, high brightness and adjustable, can be carried out and the screen editor, such as spots prominent feature of the application in all walks of life become more to the more general. Therefore, the general two-color LED dot matrix display, can display Chinese characters and a variety of common characters, such as information, can be applied to public places to the public release of the information. The design of two-color LED dot matrix display 89C51 control through their shows, the output can be a particular color output can be two colors at the same time; can change the dynamic display of the mobile speed; also can change the display (left , down, diagonal movement, etc.). Understanding as well as the display shows the control principle is the principle of design. The design of two-color display screen in monochrome developed from the basis, therefore, increase the width of the circumstances, the focus of this design is the design of color control circuit, as well as upper and lower sub-display screen. Key words：Two-color dot-matrix LED display；89C51； Two-color control circuit； upper and lower sub-display screen