【正文】 畢業(yè)設(shè)計(jì)論文 基于單片機(jī)的點(diǎn)陣漢字顯示屏的設(shè)計(jì) 摘 要 LED 點(diǎn)陣顯示屏作為一種新興的顯示器件 ,是由多個(gè)獨(dú)立的 LED 發(fā)光二極管封裝而成 . LED 點(diǎn)陣顯示屏可以顯示數(shù)字或符號(hào) , 通常用來(lái)顯示時(shí)間、速度、系統(tǒng)狀態(tài)等。 本設(shè)計(jì)是 4個(gè) 16 16點(diǎn)陣 LED 電子顯示屏的設(shè)計(jì)。整機(jī)以美國(guó) ATMEL 公司生產(chǎn)的 40腳單片機(jī) 80C51為核心，介紹了以它為控制系統(tǒng)的 LED 點(diǎn)陣電子顯示屏的動(dòng)態(tài)設(shè)計(jì)和開(kāi)發(fā)過(guò)程。通過(guò)該芯片控制一個(gè)行驅(qū)動(dòng)器 74LS138和八個(gè)列驅(qū)動(dòng)器 4049來(lái)驅(qū)動(dòng)顯示屏顯示。該電子顯示屏可以顯示 4個(gè)漢字，采用 16塊 8 x 8點(diǎn)陣 LED 顯示模塊來(lái)組成 4個(gè) 16x16點(diǎn)陣顯示模式。顯示采用動(dòng)態(tài)顯示，使得文字能夠?qū)崿F(xiàn)靜止顯示方式。文中詳細(xì)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)，以及使用說(shuō)明等。 關(guān)鍵詞： 80C51單片機(jī) 。 LED。 點(diǎn)陣顯示 。 動(dòng)態(tài)顯示 The design of display Chinese characters based on MCU Abstract LED dot matrix display as a new display device, is posed of multiple independent package from the LED light emitting diodes. LED dot matrix display can display numbers or symbols, usually used to display time, speed, the system state. This design is the design of 4 16 * 16 dotmatrix LED electronic display screen. The machine to the United States of America ATMEL pany production of 40 feet 80C51 MCU as the core, introduces the dynamic design and the development of its control system for LED dot matrix display process. The chip controls good driver 74LS138 and eight row driver 4049 to drive the display screen to display. The electronic screen can display 4 Chinese characters, using the display module is posed of 4 16x16 dot matrix display mode 16 blocks of 8 x 8 dot matrix LED. Shows the dynamic display, making the text to achieve a static display mode. This paper introduces in detail the LED dot matrix display hardware design, hardware circuit of each part of the function and principle, the corresponding software program design, as well as the use and so. Keywords: 80C51。 LED。 dot matrix display。 dynamic display 目 錄 第一章 緒論 ................................................................. 1 課題背景 ............................................................ 1 國(guó)內(nèi)外研究現(xiàn)狀 ...................................................... 1 選題目的及意義 ...................................................... 2 生產(chǎn)需求狀況 ........................................................ 2 LED 電子顯示屏概述 ................................................... 3 第二章 系統(tǒng)方案設(shè)計(jì)與論證 ................................................... 4 ......................................................... 4 ......................................................... 5 單片機(jī) ......................................................... 5 EDA 電子設(shè)計(jì)自動(dòng)化 ............................................. 5 第三章 系統(tǒng)硬件的設(shè)計(jì) ....................................................... 7 電路原理圖 .......................................................... 7 系統(tǒng)硬件概述 ........................................................ 7 80C51單片機(jī)簡(jiǎn)介 .............................................. 7 譯碼器及點(diǎn)陣顯示屏 ............................................ 9 元件清單 ........................................................... 10 顯示原理及控制方式分析 ............................................. 11 LED 點(diǎn)陣模塊結(jié)構(gòu) .............................................. 11 LED 動(dòng)態(tài)顯示原理 .............................................. 11 LED 控制方式 .................................................. 12 第四章 系統(tǒng)軟件的設(shè)計(jì) ...................................................... 13 系統(tǒng)程序的設(shè)計(jì) ..................................................... 13 顯示驅(qū)動(dòng)程序 .................................................. 13 系統(tǒng)主程序 .................................................... 13 程序流程圖 ......................................................... 13 字模生成 ........................................................... 14 LED 顯示屏領(lǐng)域字模實(shí)現(xiàn)技術(shù) .................................... 15 字庫(kù)生成 ...................................................... 16 Keil 軟件調(diào)試 ....................................................... 16 Protues 仿真 ....................................................... 17 總 結(jié) ...................................................................... 18 附錄：程序代碼 .........