基于AVR控制的双色LED显示屏设计.doc

哈 尔 滨 理 工 大 学 毕 业 设 计 题 目：双色LED显示屏的设计与仿真 院 、 系： 姓 名： 指导教师： 系 主 任： 20**年 *月 *日 双色LED显示屏设计与仿真 摘要 ×16双色LED点阵显示屏的设计。本文首先介绍了LED显示屏的显示原理、设计过程。本次设计使用ATMEL 公司生产的40脚单片机ATmage16为核心，采用74HC595、74HC138、CD4049和8050为外围驱动芯片构成双色LED显示屏的行、列驱动电路。先后介绍了硬件设计思路、仿真过程、软件设计过程和硬件电路搭建过程。单片机控制系统程序采用C语言进行编辑，仿真使用PROTEUS仿真软件，通过运用元件库的芯片和元器件搭建电路，载入编程软件生成的*HEX文件进行仿真，最后进行实物制作。本次设计最终可以用16*16双色LED显示屏多个汉字的滚动显示。显示屏可以改变显示颜色，其中包括红色、绿色和橙色，还可以控制显示移动方向并且有暂停功能。 关键词 双色LED；点阵；显示屏；汉字 Design and simulation of two-color LED display Abstract LED display has become an important symbol of the city lighting, modernization and information society with continuous improvement and beautification of peoples living environment. LED lights can be seen in the large shopping malls, railway station, docks, underground station and so on. LED business has become a fast-growing new industry, a huge market space and a bright prospect. This design is a 16 × 16 two-color LED dot matrix display.First the article introduced the display principle of LED dot matrix, and then describes the design process. This design uses 40 feet’s microcontroller ATmage16 of ATMEL Corporationcore to be the core, using 74HC595, 74HC138, CD4049 and 8050 constitute the peripheral drive circuits of two-color LED display to drive row and column. The article has introduced the ideas of hardware design, the simulation, the software design, the hardware design and the process of building circuit. SCM control system using C language for editing. The simulation uses the simulantion software called PROTEUS, through the use of component libraries to build circuit chips and components, and loading * HEX file generated by the programming software, then the simulation can be finished. Finally, it’s the manufacture of the real circuit. The final design can use the 16 * 16 two-color LED to display multiple characters by scroll display mode.