LED图文屏以显示文字、符号、图片为主，其信息是在计算机上经专用软件编辑生成，经通讯口传输到控制器，保存在FLASH存储器中，再由控制器脱机循环播放。-LED graphic screen to display text, symbols, pictures, mainly, the information is edited on a computer generated by special software, the communication port transfer to the controller, stored in FLASH memory, and then from the controller off-line loop.