基于单片机和CPLD的LED点阵书写显示屏设计

Design of LED Dot-Matrix Handwritten Display

设计并制作了一个基于16×16LED点阵模块的书写显示屏。当光笔触及点阵模块表面时,先由光笔检测触及位置处点的扫描微亮信号以获取其行列坐标,再依据功能需求决定该坐标处的点是否点亮至人眼可见的显示状态,从而在屏上实现"点亮、划亮、反显、整屏擦除、笔画擦除、对象拖移、连写多字"等书写显示功能。

This paper designs a handwritten display based on the 16×16 LED dot-matrix.when the light-pen touches the dot-matrix module＇s surface.Ffirstly,light-pen detects the touched position＇s glimmer signal and gains its coordinates,and then decide whether the dot is lighten up to which human eye can see clearly based on function requirements,and thus to realize such functions as lightening a dot,zoned light,anti-display,clearing whole display screen,strokes erasing,dragging object and writing multi-word on the written display.