【正文】 alysis, the system hardware design , the system software designs three parts. The system macro analysis is this article foundation, the system hardware design is this article key, is this design hard core, this part first simply describes the system hardware principle of work, and attaches by the system hardware design diagram, elaborated various hardware interface technology which and each interface module function and the work process this graduation project applies. The system software design is this article sublimation. This article poses the guiding ideology is the software and hardware unifies, take the hardware as the foundation, carries on various functional module the design. This design usability is strong, simplicity of operator, extended function. Keywords: Monolithic。本設(shè)計(jì)實(shí)用性強(qiáng)、操作簡單、擴(kuò)展功能強(qiáng)。系統(tǒng)總體分析是基礎(chǔ)；系統(tǒng)硬件設(shè)計(jì)是本文的關(guān)鍵及核心部分，該部 分首先簡單描述系統(tǒng)硬件工作原理，且附以系統(tǒng)硬件設(shè)計(jì)框圖，論述了本次畢業(yè)設(shè)計(jì)所應(yīng)用的各硬件接口技術(shù)和各個(gè)接口模塊的功能及工作過程；軟件設(shè)計(jì)是系統(tǒng)運(yùn)行必不可少的部分。其中著重介紹了 LED 點(diǎn)陣顯示的硬件設(shè)計(jì)思路、硬件電路各個(gè)部分的功能及原理、相應(yīng)軟件的程序設(shè)計(jì)，以及詳細(xì)的使用說明和工作流程。 目 錄 摘要 ........................................................................................................... Ⅰ Abstract .................................................................................................... Ⅱ 引 言 ........................................................................................................ 1 第 1 章 LED 顯示屏的介紹 ..................................................................... 2 LED顯示屏的發(fā)展背景及國內(nèi)外研究現(xiàn)狀 ............................................ 2 LED顯示 屏的分類 ............................................................................. 3 LED 顯示屏的顯示方案 ....................................................................... 3 LED 顯示屏的作用及市場前景 ............................................................. 4 第 2 章 系統(tǒng)總體分析 ............................................................................... 6 設(shè)計(jì)目標(biāo)及采取的方案 ...................................................................... 6 設(shè)計(jì)目標(biāo) ...................................................................................... 6 設(shè) 計(jì)采取的方案 ............................................................................ 6 工作原理 .......................................................................................... 7 總體設(shè)計(jì) .......................................................................................... 7 第 3 章 系統(tǒng)硬件設(shè)計(jì) ............................................................................... 8 AT89C51 芯片的 簡要 介紹 ................................................................... 8 時(shí)鐘電路 .......................................................................................... 9 復(fù)位電路 ......................................................................................... 10 驅(qū)動(dòng)電路設(shè)計(jì) .................................................................................. 10 行驅(qū)動(dòng)電路設(shè)計(jì) ........................................................................... 10 列驅(qū)動(dòng)電路設(shè)計(jì) ........................................................................... 13 電源模塊設(shè)計(jì) .................................................................................. 16 點(diǎn)陣式 LED 漢字顯示屏設(shè)計(jì) .............................................................. 16 點(diǎn)陣式 LED 顯示屏設(shè)計(jì) ................................................................. 16 LED 電子顯示屏顯示字符原理 ........................................................ 17 漢字顯示原理 ............................................................................... 18 系統(tǒng)整體電路 .................................................................................. 20 第 4 章 系統(tǒng)軟件設(shè)計(jì) .............................................................................. 21 主程序 設(shè)計(jì) ..................................................................................... 21 子程序設(shè)計(jì) ..................................................................................... 21 第 5 章 系統(tǒng)制作與調(diào)試 .......................................................................... 25 Proteus 軟件簡要介紹 ...................................................................... 25 仿真過程 ......................................................................................... 25 硬件制作與調(diào)試 ............................................................................... 26 硬件電路板的制作 ........................................................................ 26 系統(tǒng)硬件調(diào)試 ............................................................................... 26 系統(tǒng)軟件調(diào)試 .................................................................................. 27 結(jié) 論 ....................................................................................................... 29 致 謝 ....................................................................................................... 30 參考文獻(xiàn) ................................................................................................... 31 附錄 A 源程序 ........................................................................................... 32 附錄 B 實(shí)物圖 ........................................................................................... 36 基于單片機(jī)的 LED 滾動(dòng)漢字顯示器設(shè)計(jì) 摘要： LED（ Light Emitting Diode）行業(yè)已成為一個(gè)快速發(fā)展的新興產(chǎn)業(yè)，市場空間巨大，前景廣闊。本文介紹了 基 于 單片機(jī) AT89C51 的 16 16點(diǎn)陣 LED 漢字滾動(dòng)顯示屏的設(shè)計(jì) 。 本文分為六部分，其中主要內(nèi)容是系統(tǒng)總體分析，系統(tǒng)硬件設(shè)計(jì)，系統(tǒng)軟件設(shè)計(jì)三部分。 本文撰寫的主導(dǎo)思想是軟、硬件相結(jié)合，以硬件為基礎(chǔ)，來進(jìn)行各功能模塊的設(shè)計(jì)。 本顯示屏的設(shè)計(jì)具有體積小、硬件少、電路結(jié)構(gòu)簡單及容易實(shí)現(xiàn)等優(yōu)點(diǎn) 。 LED。 Chinese character demonstrates 引 言 LED 顯示屏是利用 發(fā)光二極管 點(diǎn)陣模塊或像素單元組成的平面式顯示屏幕。并廣泛的應(yīng)用于公交汽車，碼頭，商店，學(xué)校和銀行等公共場合的信息發(fā)布和廣告宣傳。 LED 顯示屏發(fā)展較快，本文講述了基于 AT