基于STC12单片机控制LED点阵书写显示屏

摘要

系统是以STC12LE5404AD单片机作为主控器，通过3DU33光敏三极管，采集屏上的光信号，经适当的放大后反馈给单片机来控制在点阵屏上显示字符。整个书写过程和平常书写汉字一样流畅。而且能实现对字符的擦除、反显和移动，具有很大的实用价值。%The system is based on STC12LE5404AD microcontroller as the main controller,through 3DU33 phototransistor,optical signal acquisition on the screen,by properly amplified feedback to the microcontroller to control the characters displayed on the screen.The whole process of writing and writing Chinese characters as smoothly as usual.But also can realize the character of erasing,reverse display and mobile, and has great practical value.