LED显示系统设计 毕业设计论文.doc

目录 I LED 显示系统设计目录摘要·························································································· III ABSTRACT ················································································· IV 1绪论························································································ 1 LED 显示屏的广泛应用····························································· 1 最新的 LED 显示屏技术···························································· 1 本课题的主要内容··································································· 1 第 2章系统硬件方案论证与选择······················································· 3 上位机部分方案选择································································ 3 通信部分方案选择··································································· 3 控制部分方案选择··································································· 4 显示部分方案选择··································································· 4 最终确定硬件设计方案····························································· 6 第 3章系统硬件设计······································································ 7 硬件整体设计概述及功能分析···················································· 7 控制单元设计········································································· 7 行驱动模块设计······································································ 9 列驱动模块设计···································································· 11 单片机 ISP 下载编程器···························································· 13 USB 电源接口········································································ 14 MAX232 串口通信电路···························································· 14 系统总电路图······································································· 15 第 4章系统软件设计····································································· 17 系统软件方案选择································································· 17 系统软件程序设计····························································