基于51單片機(jī)的動(dòng)態(tài)點(diǎn)陣LED漢字顯示屏的設(shè)計(jì)-畢業(yè)論文

基于51單片機(jī)的動(dòng)態(tài)點(diǎn)陣LED漢字顯示屏的設(shè)計(jì)摘要LED點(diǎn)陣顯示屏是利用發(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，可以顯示漢字、數(shù)字或特殊符號，通常用來顯示時(shí)間、速度、系統(tǒng)狀態(tài)等。LED點(diǎn)陣顯示屏作為一種新興的顯示器件,現(xiàn)已廣泛應(yīng)用于廣告、交通運(yùn)輸、教育系統(tǒng)、銀行等工業(yè)企業(yè)管理和其它公共場所,產(chǎn)業(yè)面臨良好的市場發(fā)展機(jī)遇及前景。本設(shè)計(jì)研究了基于單片機(jī)AT89C51的8×8點(diǎn)陣LED動(dòng)態(tài)顯示屏的設(shè)計(jì)與運(yùn)用Proteus軟件的仿真實(shí)現(xiàn)。具體介紹了設(shè)計(jì)的系統(tǒng)方案、LED圖形顯示原理及應(yīng)用、LED漢字顯示屏的硬件電路設(shè)計(jì)、匯編程序設(shè)計(jì)與調(diào)試、Proteus軟件仿真，軟件流程圖等內(nèi)容。本設(shè)計(jì)主要以AT89C51為核心芯片，通過程序控制，采用動(dòng)態(tài)掃描技術(shù)，用AT89C51的P0口控制行驅(qū)動(dòng)器74LS245和P3口來直接驅(qū)動(dòng)顯示屏，在點(diǎn)陣LED顯示屏上實(shí)現(xiàn)了漢字的動(dòng)態(tài)顯示。在負(fù)載范圍內(nèi),只需通過簡單的級聯(lián)就可以對顯示屏進(jìn)行擴(kuò)展，來制作一款擁有多功能模塊化的點(diǎn)陣LED的多功能顯示屏，是一種成本低廉的圖文顯示方案。關(guān)鍵詞：AT89C51單片機(jī)；LED點(diǎn)陣；動(dòng)態(tài)掃描；Proteus仿真軟件DynamicdotmatrixLEDChinesecharactersdisplaydesignBasedon51Micro-controllerABSTRACTLEDdotmatrixdisplaytisPlanardisplayscreenwhichiscomposedoflight-emittingdiodedotmatrixmoduleorpixelunit.LEDdotmatrixdisplaycandisplayChinesecharacters,numbers,orspecialsymbols,usuallyareusedtodisplaytime,speed,andsystemstatus.LEDdotmatrixdisplayisanewdisplaydevices,whichiswidelyusedinadvertising,transport,educationsystem,banksandotherindustrialenterprisesandotherpublicplacesnow,andtheindustryisfacinggoodopportunitiesformarketdevelopmentandprospects.Thedesignstudiesthatthe8×8dotmatrixLEDdynamicdisplaydesignbasedonAT89C51Micro-controllerandusingProteussoftwaretosimulate.Specificallydesignedsystemsolutions,LEDgraphicdisplayprincipleandapplicationofLEDChinesecharactersdisplayhardwarecircuitdesign,assemblerprogramminganddebugging,Proteussoftwaresimulation,softwareflowchart.ThisdesignregardstheAT89C51asthecorechip,usesAT89C51theP0porttocontrollinedrivethe74LS245andP3portstodirectlydrivethedisplaybytheprogramcontrollinganddynamicscanningtechnology,ChinesecharactersistobeDynamicdisplayedonadotmatrixLEDdisplay.Intheloadrange,displaycanbeextendedjustbyasimplecascade,tocreateamultifunctionaldisplaywhichhasamultifunctionalmodularLEDdotmatrix,anditisalow-costgraphicdisplayprogram.Keywords:AT89C51Micro-controller;LEDdotmatrix;Dynamicscanning;Thesimulationsoftwareofproteus目錄TOC\o"1-3"\h\u15396１緒論 附錄 RS_CNT EQU 30HNUMEQU31HTCON_T EQU 32H ORG 00HLJMPSTARTORG 0BHLJMPINT_T0START: MOV RS_CNT,#00H MOV NUM,#00H MOV TCON_T,#00HMOVTMOD,#01HMOVTH0,#(65536-5000)/256;定時(shí)5MSMOVTL0,#(65536-5000)MOD256MOVIE,#82HSETBTR0SJMP$;等待中斷INT_T0:MOVTH0,#(65536-5000)/256MOVTL0,#(65536-5000)MOD256MOVDPTR,#TABLEMOVA,RS_CNT;取列碼MOVCA,@A+DPTRMOVP3,A;顯示列碼MOVDPTR,#TABLE1MOVA,NUM;取行碼MOVB,#8MULABADDA,RS_CNTMOVCA,@A+DPTRCPLA;取反MOVP0,A;顯示行碼INCRS_CNTMOVA,RS_CNTCJNEA,#8,NEXTMOVRS_CNT,#00HNEXT:INCTCON_TMOVA,TCON_TCJNEA,#200,RETUNE;每個(gè)字顯示1sMOVTCON_T,#00HINCNUMMOVA,NUMCJNEA,#7,RETUNEMOVNUM,#00HRETUNE:RETITABLE:DB080H,040H,020H,010H,008H,004H,002H,001HTABLE1:DB00H,03H,7DH,55H,0FFH,54H,7CH,00H;電DB06H,02H,4EH,68H,68H,0E8H,48H,20H;氣DB7EH,4AH,7AH,42H,72H,4AH,7EH,00H;四DB54H,7CH,54H,0FCH,12H,54H,7CH,54H