【正文】 六十年代末發(fā)展起來的一種半導(dǎo)體顯示器件，七十年代，隨著半導(dǎo)體材料合成技術(shù)、單晶制造技術(shù)和Ｐ Ｎ 結(jié)形成技術(shù)的研究進(jìn)展，發(fā)光二極管在發(fā)光顏色、亮度等性能得以提高并迅速進(jìn)入批量化和實(shí)用化。更重要的意義是單片機(jī)的應(yīng)用改變了控制系統(tǒng)傳統(tǒng)的設(shè)計思想和方法。單片機(jī)的特點(diǎn)是體積小、集成度高、重量輕、抗干擾能力強(qiáng)，對環(huán)境要求不高，價格低廉，可靠性高，靈活性好，開發(fā)較為容易。 單片機(jī)控制系統(tǒng)程序采用單片機(jī) C 語言進(jìn)行編輯，通過編程控制各顯示點(diǎn)對應(yīng) LED 陽極和陰極端的電平，就可以有效的控制各顯示點(diǎn)的亮滅。顯示采用動態(tài)顯示，使得 數(shù)字、字母 或文字能夠?qū)崿F(xiàn)移入移出等多種顯示方式。 該電子顯示屏可以顯示各種文字 、數(shù)字、字母 ，采用 4 塊 88 點(diǎn)陣 LED 顯示模塊來組成 1616 點(diǎn)陣顯示模式。通過該芯片控制一個行驅(qū)動器 74HC154 和兩個列驅(qū)動器 74HC595 來驅(qū)動顯示屏顯示 。 關(guān)鍵詞 ： 單片機(jī) ； 點(diǎn)陣 驅(qū)動；點(diǎn)陣顯示 II Abstract This paper is a 16 16 lattice LED electron display monitor design. The electronic screen can show all kinds of written, numbers or letters,one full screen display Chinese characters, four pieces of 88 dotmatrix LED display modules to form the 1616 dot matrix display mode. Show dynamic show that makes static graphic or text can be achieved, shifted out of various formats. This paper describes the hardware design of the LED dot matrix display, and the principle function of the various parts of the circuit, the corresponding software program design and the use of some such. The whole equipment is with the 40pin AT89C51 MCU (Micro Controller Unit) produced by the American ATMEL pany at the core, introduced ta ke it as the control system LED lattice electron display monitor dynamic design and the development good driver 74HC154 and two row driver 74HC595 through this chip actuates the display monitor process control system used for editing MCU C language, Programming control points indicated by the corresponding LED anode and overcast extreme level. We can effectively control the defense showed bright spots. The lattice data shows characters can prepare themselves (that is, direct lattice Painting), which can also be extracted from the standard font. Through the System debugging, this design meets the basic requirements. Key words： Micro Controller Unit, Lattice drive, Lattice display III 目 錄 課題背景 ...........................................................................................................1 選題意義 ...........................................................................................................2 研究現(xiàn)狀及發(fā)展趨勢 .......................................................................................2 單片機(jī)的發(fā)展歷史和發(fā)展方向 .............................................................2 單片機(jī)的應(yīng)用 .........................................................................................3 LED 顯示屏產(chǎn)業(yè)現(xiàn)狀及發(fā)展趨勢 ..........................................................4 功能要求及方案論證 .......................................................................................5 功能要求 .................................................................................................5 顯示模式方案論證 .................................................................................5 顯示數(shù)據(jù)傳輸方案論證 .........................................................................6 設(shè)計框圖及介紹 ...............................................................................................7 控制電路模塊 ...................................................................................................8 單片機(jī)簡介 .............................................................................................8 單片機(jī)最小應(yīng)用系統(tǒng) 電路設(shè)計 .............................................................8 單片機(jī)引腳介紹 ...................................................................................10 顯示模塊介紹 .................................................................................................12 8X8 點(diǎn)陣介紹 ........................................................................................12 組成 16X16 點(diǎn)陣顯示屏介紹 ...............................................................13 文字顯示及移動顯示介紹 ...................................................................15 LED 點(diǎn)陣取模軟件說明 ........................................................................16 LED 點(diǎn)陣驅(qū)動說明 ................................................................................17 系統(tǒng)的程序流程圖 .........................................................................................22 主程序 .............................................................................................................23 軟件調(diào)試 ........................................................................................................25 硬件調(diào)試 ........................................................................................................25 性能分析 ........................................................................................................26 第一章 緒論 ...................................................................................................................1 第二章 系統(tǒng)硬件電路的 設(shè)計 .......................................................................................7 第三章 系統(tǒng)軟件設(shè)計 .................................................................................................22 第四章 調(diào)試及性能分析 .............................................................................................25 總 結(jié) .........................................................................................................................27 參考文獻(xiàn) .........................................................................................................................28 致 謝 .........................................................................................................................29 附錄 1 原件清單 ..........................................................................................................30 附錄 2 C 程序 ...............................................................................................................31 基于單片機(jī)的點(diǎn)陣電子顯示屏的設(shè)計 1 基于單片機(jī)的點(diǎn)陣電子顯示屏的設(shè)計 第一章 緒論 課題背景 單片機(jī)自 20 世紀(jì) 70 年代問世以來，以極其高的性能價格比受到人們的重視和關(guān)注，所以應(yīng)用很廣，發(fā)展很快。我們可以開發(fā)利用單片機(jī)系統(tǒng)以獲得很高的經(jīng)濟(jì)效益。例如，本文所要論述的通過單片機(jī)來控制 LED點(diǎn)陣顯示。它是集微電子技術(shù)、光電子技術(shù)、計算機(jī)技術(shù)、信息處理技術(shù)于一體的顯示系統(tǒng)，是目前國際上極為先進(jìn)的顯示媒體。