点阵LED汉字显示系统的设计规划(硬件部分).doc

点阵LED汉字显示系统的设计（硬件部分） 摘 要 LED电子显示屏由于具有所显内容信息量大，外形美观大方，操作方便灵活，制作简单，安装方便，，被广泛应用于各种公共场合，如汽车报站器、广告屏以及公告牌等。考虑到所需元器件的易购性，本设计使用了8×8的点阵发光管模块，组成16×发光点阵，显示待定的中文、字符以及数字。 LED点阵； 16X16点阵；单片机 Abstract Because the LED electron display monitor has the institute content information content to be obviously big, the contour elegant appearance, the ease of operation is flexible, the manufacture is simple, the easy installation, was the recent years obtains the widespread application important information equipment, is widely applied in each kind of public area, like the automobile newspaper stood, the advertisement screen as well as the notice board and so on. This article introduced one section take monolithic integrated circuit AT89S51 as controllers LED lattice display monitor systems design. Considered needs primary devices Yi Gou, this design has used 8×8 lattice photo tube module, composition 16×16 illumination lattice, demonstration undetermined Chinese, character as well as digit. Actuates a 16×16 resolution by the demonstration actuation module the LED lattice display monitors scanning demonstration. Selects at89S51 monolithic integrated circuit has the low in price procedure to read in the convenience the characteristic to cause the overall system convenience maintenance and the overhaul. In addition, this system has only taken the monolithic integrated circuit few I /O mouth and the memory, has left behind the space which for the system the function expands. Keywords LED dot-matrix; 16X16 dot matrix; singlechip; display; scan 目 录 摘 要 Ⅰ Abstract Ⅱ 第1章　绪论 1 1.1课题背景 1 1.1.1 选题背景 1 1.1.2 研究现状及发展趋势 1 1.2 LED显示屏概述 2 1.2.1 LED发光二极管 2 1.3 主要设计内容及技术指标 2 1.3.1 主要设计内容 2 1.3.2 主要设计指标 2 第2章 硬件电路设计 3 2.1 电路的工作原理 3 2.1.1 硬件电路的设计原理 3 2.1.2 16*16点阵LED显示器汉字显示的工作原理 4 2.1.3 控制电路的工作原理 5 2.1.4 单片机电路的工作原理 5 2.2 LED点阵显示系统的硬件设计 6 2.2.1 显示控制电路 6 2.2.2 显示驱动电路 6 2.2.3 LED点阵显示方式 7 2.3 LED外围电路 7 2.3.1 电源电路 7 2.3.2 复位电路 8 2.3.3 时钟电路 9 2.4 16*16LED点阵显示屏硬件电路图 10 第3章　软件电路设计 12 3.1 软件系统 12 3.2 程序流程图