基于AT89S52的手势可控LED滚动显示屏设计

摘要

Adopted the modular design, this paper implemented a 16×64 LED dot matrix rolling display screen. It can change display direction by the gesture. In the design, AT89S52 single chip was used as micro controller, the 74HC154 decoder and 8550 PNP transistor as row driver circuits, photocell control switch as scrolling direction controller, and 16 pieces of 8×8 LED as the 16×64 dot matrix characters rolling display screen. The software and hardware tested results shows that this design can change display direction accurately according to the user gestures. And the Chinese characters is clear, no crosstalk, no ghosting.%本文采用模块化设计方案，实现了一款用手势可以改变汉字滚动方向的16×64 LED点阵显示屏的设计，设计中采用AT89S52单片机为微控制器，由74HC154译码器和PNP 型三极管8550构成行驱动电路，以光电管为控制开关实现对文字滚动方向的控制，采用16个8x8LED 显示器级联构成16×64的点阵汉字滚动显示屏。软、硬件设计结果表明，该设计能够准确按照用户手势改变显示方向，且汉字清晰，无串扰，无重影。