亮度可调的LED点阵书写显示屏的设计与制作

摘要

Based on main controller AT89C52 chip,a hardware platform of 16×16 dot-matrix is setup and a software system of dot-matrix display writing function is designed by adopting of modular programming method.The results of practical fabrication and testing show that brightness levels of LED dot-matrix display can be adjustable,and functions of being lighted,being draw lighting,whole screen erased,normal display,reverse display,stroke erased are realized.Efficacy of saving enengy and protecting environment are anticipated.%基于AT89C52主控制器芯片,搭建16×16点阵LED书写显示屏的硬件平台并采用模块化的编程方法,设计点阵显示屏书写功能的软件系统.实际制作和测试结果表明,LED点阵显示屏的亮度等级可以进行调节,实现了"点亮“、”划亮“、”整屏擦除“、”正常显示“、”反相显示“、”笔画擦除"等书写显示功能,起到了节能环保的功效.