"基于AVR单片机的双色LED显示屏控制系统设计及应用"

在基于AVR单片机的双色LED显示屏控制系统设计文档中，介绍了一种针对双色LED显示屏的异步控制系统。该控制系统采用高性价比的ATmega16单片机作为主控芯片，采用并串结合的数据输出方式，可以驱动较大面积的双色LED显示屏。该系统可以和市面上标准LED电子显示屏接口连接，实现至少192×32（双色）点阵大小的控制。它能够驱动LED显示屏静态显示图形、文字，并且实现图形、文字的多种动态效果。此外，它可以通过232通讯连接PC机修改显示内容，也可以通过SD卡更新显示内容。 LED电子显示屏在商场、学校、银行、邮局、车站等公共场所被广泛应用，并且越来越多的街头店铺也开始使用LED电子条屏来显示产品信息、促销活动，因此LED电子显示屏的市场前景十分广阔。这种基于AVR单片机的双色LED显示屏控制系统设计是为了满足市场需求，同时，使用了成本低廉的ATmega16单片机，从而降低了生产成本，提高了市场竞争力。 关键词：Atmega16、LED、点阵、SD卡。 Overall, the document describes a control system for a two-color LED display based on the AVR microcontroller. This control system uses the cost-effective ATmega16 microcontroller as the main control chip and employs a parallel series data output method. It can drive a large area of the two-color LED display at a low cost. The system can be connected to standard LED electronic display interfaces on the market, realizing at least 192×32 (two-color) matrix size control. It can drive the LED display to statically display graphics and text, as well as various dynamic effects of graphics and text. Additionally, it can modify display content anytime through a 232 communication connection with a PC, and can also update display content through an SD card. LED electronic displays are widely used in public places such as shopping malls, schools, banks, post offices, and stations, and are increasingly being used by street shops to display product information and promotions. As a result, the market prospects for LED electronic displays are vast. This design of a control system for a two-color LED display based on the AVR microcontroller is intended to meet market demands while using the cost-effective ATmega16 microcontroller to lower production costs and improve market competitiveness. Keywords: Atmega16, LED, matrix, SD card.