毕业设计（论文）-于单片机的点阵显示系统设计.docVIP

西安工程大学本科毕业设计（论文）西安工程大学本科毕业设计（论文）PAGE XXXIX 毕业设计（论文）题 目： 基于单片机的点阵显示系统设计 学 院： 电子信息学院 专业班级： 自动化2012级2班 指导教师： 职称： 副教授 学生姓名： 学 号： PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT VI PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT I摘 要 伴随着科技的进步，LED点阵显示屏作为一种新兴的显示器件走进我们的视野，它是由多个独立的LED发光二极管封装而成。通过LED点阵显示屏可以显示数字、符号以及文字，通常用在广告，指示牌，公告牌上。LED 点阵电子显示屏是集微电子技术、计算机技术、信息处理技术于一体的大型显示屏系统。它以其色彩鲜艳，动态范围广，亮度高，寿命长，工作稳定可靠等优点而成为众多显示媒体以及户外作业显示的理想选择。本设计利是一种基于STC89C52单片机的16*16点阵显示屏的设计，其中STC89C52单片机负责对整个系统进行总体控制，设计中使用4块8*8单红色点阵屏来组成16*16点阵屏，通过三极管来控制点阵的行方向，而列方向的控制采用两片串行输入八位并行输出的74HC595级联，通过快速的动态刷新来显示我们需要的内容，以达到动态显示的目的。关键词：点阵，单片机，锁存器，动态扫描 PAGE \* MERGEFORMAT III PAGE \* MERGEFORMAT IIIABSTRACTWith the progress of science and technology, LED dot matrix display, which is packaged from multiple independent LED light-emitting diodes, as an emerging display device has come into our field of vision. Because LED dot matrix display can display numbers,symbols and words, it usually used in advertising, signage and bulletin board.Electronic LED dot matrix display is a large system which joins microelectronics technology, computer technology,information processing technology. It has become ideal option for the show of many media and outdoor activities because of the merits of bright colors, wide dynamic range, high brightness, long life, stable and reliable work.This design is a design of 16*16 dot matrix display screen based on STC89C52 microcontroller, which is responsible for overall control of entire system, it uses 4 pieces of 8*8 single red dot matrix screen to form a 16*16 dot matrix screen, the line of lattice is controlled by a transistor, and the column of lattice is controlled by the cascading of two-piece 74LS595 with the function of turn serial input into eight parallel output, it displays the details we need by dynamic frequently refresh, which reaches the purpose of dynamic display.