本文采用PIC 16F877A单片机为主要核心控制元件，设计了一个32×32 LED点阵模块的书写显示屏。它主要由光笔模块和点阵显示模块组成，光笔模块利用光敏电阻的光电特性，实现微亮检测功能。-Control as the main core components, design a 3232 LED dot matrix display module writing this article using PIC 16F877A microcontroller. It mainly consis

- High speed display connection straight to SPI port and pins. - A full 5 x 7 pixel font set and character routines for display. - A numerical and symbol 6 x 16 font set with a colon especially for clocks and other fun large displays. - Special