實(shí)驗(yàn)原理51單片機(jī)的點(diǎn)陣顯示器的使用，點(diǎn)陣數(shù)字拉幕顯示和點(diǎn)陣數(shù)字顯示區(qū)別與實(shí)現(xiàn).主要器件以及電路圖單片機(jī)AT89C51，緩沖驅(qū)動(dòng)電路74LS245，電容CAPCAP-ELEC,點(diǎn)陣matrix-8*8-red。點(diǎn)陣數(shù)字拉幕顯示匯編程序源碼R_CNTEQU31HNUMBEQU32HTCOUNTEQU33HORG00HLJMPSTARTORG0BHLJMPINT_T0ORG30HSTART:MOVR0,#00H;顯示的幕次（即每一幕顯示的行碼起始序號(hào)）置0MOVR_CNT,#00H;列碼序號(hào)置0MOVNUMB,#00H;行碼序號(hào)置0MOVTCOUNT,#00HMOVTMOD,#01HMOVTH0,#(65536-5000)/256;定時(shí)5msMOVTL0,#(65536-5000)MOD 256SETBTR0MOVIE,#82HSJMP$INT_T0:MOVTH0,#(65536-5000)/256MOVTL0,#(65536-5000)MOD 256MOVDPTR,#TAB;取列碼表首地址MOVA,R_CNTMOVCA,A+DPTRMOVP3,AMOVDPTR,#NUB;取行碼表首地址MOVA,NUMBMOVCA,A+DPTRMOVP0,A;輸出行碼INCNUMBNEXT1:INCR_CNTMOVA,R_CNTCJNEA,#8,NEXT2MOVR_CNT,#00HMOVNUMB,R0NEXT2:INCTCOUNTMOVA,TCOUNTCJNEA,#40,NEXT4;每個(gè)數(shù)字顯示200ms。 必須在TCOUNT數(shù)值是8的整數(shù)倍時(shí)再進(jìn)行下面的移位操作，否則顯示銜接時(shí)會(huì)亂。MOVTCOUNT,#00HINCR0;上一幕顯示行碼的起始序號(hào)+1CJNER0,#88,NEXT3MOVR0,#00HNEXT3:MOVNUMB,R0;送新一幕顯示行碼的起始序號(hào)NEXT4:RETITAB:DB0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,7FHNUB:DB00H,00H,00H,00H,00H,00H,00H,00H;空DB00H,00H,3EH,41H,41H,41H,3EH,00H;0DB00H,00H,00H,00H,21H,7FH,01H,00H;1DB00H,00H,27H,45H,45H,45H,39H,00H;2DB00H,00H,22H,49H,49H,49H,36H,00H;3DB00H,00H,0CH,14H,24H,7FH,04H,00H;4DB00H,00H,72H,51H,51H,51H,4EH,00H;5DB00H,00H,3EH,49H,49H,49H,26H,00H;6DB00H,00H,40H,40H,40H,4FH,70H,00H;7DB00H,00H,36H,49H,49H,49H,36H,00H;8DB00H,00H,32H,49H,49H,49H,3EH,00H;9DB00H,00H,00H,00H,00H,00H,00H,00H;空END點(diǎn)陣數(shù)字顯示匯編程序源碼TCOUNTEQU30HR_CNTEQU31HNUMBEQU32HORG00HLJMPSTARTORG0BHLJMPINT_T0ORG30HSTART:MOVTCOUNT,#00HMOVR_CNT,#00HMOVNUMB,#0HMOVTMOD,#01HMOVTH0,#(65536-4000)/256MOVTL0,#(65536-4000)MOD 256SETBTR0MOVIE,#82HSJMP$INT_T0:MOVTH0,#(65536-4000)/256MOVTL0,#(65536-4000)MOD 256MOVDPTR,#TABMOVA,R_CNTMOVCA,A+DPTRMOVP3,AMOVDPTR,#NUBMOVA,NUMBMOVB,#8MULABADDA,R_CNTMOVCA,A+DPTRMOVP0,AINCR_CNTMOVA,R_CNTCJNEA,#8,NEXTMOVR_CNT,#00HNEXT:INCTCOUNTMOVA,TCOUNTCJNEA,#250,NEXMOVTCOUNT,#00HINCNUMBMOVA,NUMBCJNEA,#10,NEXMOVNUMB,#00HNEX:RETITAB:DB0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,7FHNUB:DB00H,00H,3EH,41H,41H,41H,3EH,00HDB00H,00H,00H,00H,21H,7FH,01H,00HDB00H,00H,27H,45H,45H,45H,39H,00HDB00H,00H,22H,49H,49H,49H,36H,00HDB00H,00H,0CH,14H,24H,7FH,04H,00HDB00H,00H,72H,51H,51H,51H,4EH,00HDB00H,00H,3EH,49H,49H,49H,2