【正文】 券、股票炒股、銀行利率等信息顯示、商業(yè)廣告播放、文化娛樂等方面，顯示的效果亮度高且清晰穩(wěn)定，越來越多的地方開始使用LED 電子顯示屏，有巨大的社會(huì)效益和經(jīng)濟(jì)效益。可以用來顯示各種文字圖形，并且可以與計(jì)算機(jī)相連接同步顯示計(jì)算機(jī)屏幕的信息，相當(dāng)于投影儀。這一種剛剛興起的 LED 大屏幕技術(shù)成為了廣大民眾目光的聚焦焦點(diǎn)。電子控制技術(shù)的高速發(fā)展和 LED 發(fā)光二級(jí)管制造工藝的進(jìn)展為高亮度大屏幕的誕生創(chuàng)造了條件。1基于單片機(jī)的動(dòng)態(tài)電子廣告牌設(shè)計(jì)畢業(yè)論文目 錄摘 要 .......................................................................................................................IAbstract...................................................................................................................II目 錄 ....................................................................................................................III1. 引言 ...................................................................................................................1 課題的背景及意義 ......................................................................................1 國(guó)內(nèi)外研究現(xiàn)狀及趨勢(shì) ..............................................................................1 任務(wù)分析與實(shí)現(xiàn) ..........................................................................................22. 硬件設(shè)計(jì) ..........................................................................................................2 硬件電路總體設(shè)計(jì)方案 ..............................................................................2 單片機(jī)原理及應(yīng)用 ......................................................................................3 STC89C52 單片機(jī)特點(diǎn) .......................................................................3 STC89C52 單片機(jī)管腳說明 ...............................................................4 單片機(jī)系統(tǒng)電路設(shè)計(jì) ..................................................................................6 時(shí)鐘電路 .............................................................................................6 復(fù)位電路 .............................................................................................6 切換按鍵電路設(shè)計(jì) ..............................................................................7 行驅(qū)動(dòng)電路設(shè)計(jì) .................................................................................7 列驅(qū)動(dòng)電路設(shè)計(jì) .................................................................................8 LED 點(diǎn)陣屏設(shè)計(jì) ..........................................................................................8 硬件電路原理圖 ........................................................................................103. 軟件設(shè)計(jì) ........................................................................................................10 編程語言介紹 ............................................................................................11 程序流程圖 ................................................................................................11 子程序設(shè)計(jì) ................................................................................................11 中斷服務(wù)程序設(shè)計(jì) ...........................................................................11 顯示程序設(shè)計(jì) ...................................................................................134. 系統(tǒng)仿真與調(diào)試 ............................................................................................14 軟件仿真 ....................................................................................................14 硬件焊接與調(diào)試 ........................................................................................175. 總結(jié)與展望 ....................................................................................................18 總結(jié) ............................................................................................................18 展望 ............................................................................................................18參考文獻(xiàn) ...............................................................................................................20附 錄 ....................................................................................................................21致 謝 ....................................................................................................................2921. 引言 課題的背景及意義隨著我國(guó)社會(huì)經(jīng)