LED点阵书写屏系统，在控制器的管理下，LED点阵模块显示屏工作在点亮模式下；当光笔触及LED点阵模块表面时，先由光笔检测触及位置处LED点的扫描微亮以获取其行列坐标，再依据功能需求决定该坐标处的LED是否点亮至人眼可见的显示状态-LED dot matrix screen writing system in the control of the management, display LED dot matrix module lighting mode When light strokes