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畢業(yè)設(shè)計-基于stc89c52單片機的模擬屏顯示控制系統(tǒng)設(shè)計-wenkub

2023-06-16 02:13:56 本頁面
 

【正文】 0 世紀 90年代出現(xiàn)的新型平板顯示器件,由于其亮度高、畫面清晰、色彩鮮艷 ,使它在公眾多媒體顯示領(lǐng)域一枝獨秀,因此市場空間巨大。 關(guān)鍵字 : 74HC161; 74HC74; 74HC595; 74HC165; 74HC245; 74HC573; 74HC139; RS232 ;STC 單片機 Abstract This paper introduces a AT89S51 singlechip for the controller system destem design the system can realize the display and dynamic in both English and Chinese characters and special effects can be through the level that the way that even to expand the size of the screen in order to achieve the purpose of that increase the content system adopts PC as a PC, PC to the single chip microputer control mand and the upper machine sent to store display code, receiving and deal with AT89S51 PC control mands and display code, the display driver modules drive a 16 and resolution of LED dot matrix display scan showed that the PC and of munication between the microcontroller using RS 232 C munication standards to achieve chooses AT89S51 is inexpensive program written to the convenient characteristics make Key word: 74HC161; 74HC74; 74HC595; 74HC165; 74HC245; 74HC573; 74HC139; RS232。該系統(tǒng)采用 STC89C52 單片機為控制中心 ,并用 MAX232 芯片來實時采集傳輸外部數(shù)據(jù),通過單片機的控制,實現(xiàn)相應(yīng)數(shù)據(jù)在模擬顯示屏上的顯示。系統(tǒng)包括地址鎖存模塊,時序控制模塊,片選模塊,顯示報警模塊四個部分,能夠?qū)崿F(xiàn)報警數(shù)據(jù)的實時采集和處理,時序控制模塊,液晶屏不同顯示模式的切換以及報警等功能。 Single chip microputer 目 錄 目 錄 ............................................................................................................................................. 1 第 1 章 引 言 ......................................................................................................................... 1 選題背景及意義 .............................................................................................................. 1 選題的背景 ............................................................................................................... 1 選題的意義 ............................................................................................................... 3 論文的整體構(gòu)架 .............................................................................................................. 3 第 2 章 開發(fā)工具簡介 ................................................................................................................... 5 KEIL C51 軟件簡介 ......................................................................................................... 5 Protel 軟件簡介 ............................................................................................................... 5 第 3 章 設(shè)計方案 ........................................................................................................................... 7 總體設(shè)計思路 .................................................................................................................. 7 方案論證 .......................................................................................................................... 8 方案一 無 MCU設(shè)計方案 ...................................................................................... 8 方案二 無 74HC595 設(shè)計方案 ............................................................................... 8 方案三 單片機控制下的移位時鐘方案 ................................................................. 9 方案確定 ................................................................................................................... 9 第 4 章 硬件設(shè)計 ......................................................................................................................... 10 系統(tǒng)設(shè)計原理圖 ............................................................................................................ 10 原理圖繪制 ............................................................................................................. 10 PCB 板制圖 ............................................................................................................. 11 系統(tǒng)各模塊介紹 ............................................................................................................ 12 地址鎖存器模塊 ..................................................................................................... 12 時序信號產(chǎn)生模塊 ................................................................................................. 13 組合邏輯應(yīng)用 ......................................................................................................... 15 第 5 章 調(diào)試結(jié)果及分析 ............................................................................................................. 17 調(diào)試結(jié)果 ........................................................................................................................ 17 結(jié)果分析 ........................................................................................................................ 17 第 6 章 結(jié) 論 ........................................................................................................................... 18 設(shè)計結(jié)論 ........................................................................................................................ 18 心得體會 ........................................................................................................................ 18 參 考 文 獻 ................................................................................................................................. 19 附 錄 一 ....................................................................................................................................... 20 附一 芯片驅(qū)動程序 ............................................................................................................. 20 附二 RS232 接口通訊協(xié)議解析 ........................................................................................ 21 致 謝 ......................................................................................................................................... 25 1 第 1 章 引 言 選題背景及意義 選題的背景 進入 21 世紀以來,我國信息技術(shù)得到快速的發(fā)展, LED 點陣屏技術(shù)也取得突破性進展及愈發(fā)成熟的市場銷售模式,同時當今社會對電子產(chǎn)品的需求量日趨擴大,以后將迎來 LED新時代 ,隨著社會科技的進步和 戶外廣告 的發(fā)展,人們對 戶外媒體 的要求也越來越高,傳統(tǒng)的 路牌 、 燈箱 、單立柱、 霓虹燈 等表現(xiàn)形式單
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