【文章內(nèi)容簡介】 ORG 0000H MOV R0,0FFH MOV R1,00HDISPLY: INC R0 CJNE R0,0AH,DISPLY1 INC R1 CJNE R1,0AH,DISPLY2 MOV R0,0FFH MOV R1,00H MOV P0,0FFH AJMP DISPLYDISPLY2:MOV A,R1 ADD A,10H MOVC A,@A+PC MOV P0,A MOV R0,0FFH AJMP DISPLY DISPLY1:MOV A,R0 ADD A,06H MOVC A,@A+PC MOV P2,A ACALL DELAY AJMP DISPLYDTAB:DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90HDB 88H,83H,0C6H,0A1H,86H,8EH,0FFH,0CH,89H,7FH,0BFH DELAY:MOV R7,0FFHDELAY1:MOV R6,0FFHDELAY2:MOV R5,03H DELAY3:DJNZ R5,DELAY3 DJNZ R6,DELAY2 DJNZ R7,DELAY1 RET END3位靜態(tài)數(shù)碼顯示： ORG 0000HSTART: MOV R0,0FFH MOV R1,00H MOV R2,00H MOV P3,0FFH MOV P2,0FFH MOV P0,0FFHDISPLY: INC R0 CJNE R0,0AH,DISPLY1 MOV R0,0FFH INC R1 CJNE R1,0AH,DISPLY2 MOV R1,00H MOV P2,0C0H INC R2 CJNE R2,0AH,DISPLY3 SJMP STARTDISPLY3:MOV A,R2 ADD A,16H MOVC A,@A+PC MOV P0,A SJMP DISPLYDISPLY2:MOV A,R1 ADD A,0EH MOVC A,@A+PC MOV P2,A SJMP DISPLY DISPLY1:MOV A,R0 ADD A,06H MOVC A,@A+PC MOV P3,A ACALL DELAY SJMP DISPLYDTAB:DB0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90HDB88H,83H,0C6H,0A1H,86H,8EH,0FFH,0CH,89H,7FH,0BFH DELAY: MOV R7,0FFHDELAY1:MOV R6,0FFHDELAY2:MOV R5,03H DELAY3:DJNZ R5,DELAY3 DJNZ R6,DELAY2 DJNZ R7,DELAY1 RET END4位靜態(tài)數(shù)碼顯示： ORG 0000HSTART: MOV R0,0FFH MOV R1,00H MOV R2,00H MOV R3,00H MOV P1,0FFH MOV P3,0FFH MOV P2,0FFH MOV P0,0FFHDISPLY: INC R0 CJNE R0,0AH,DISPLY1 MOV R0,0FFH INC R1 CJNE R1,0AH,DISPLY2 MOV R1,00H MOV P3,0C0H INC R2 CJNE R2,0AH,DISPLY3 MOV R2,00H MOV P2,0C0H INC R3 CJNE R3,0AH,DISPLY4 SJMP STARTDISPLY4:MOV A,R3 ADD A,1EH MOVC A,@A+PC MOV P0,A SJMP DISPLYDISPLY3:MOV A,R2 ADD A,16H MOVC A,@A+PC MOV P2,A SJMP DISPLYDISPLY2:MOV A,R1 ADD A,0EH MOVC A,@A+PC MOV P3,A SJMP DISPLY DISPLY1:MOV A,R0 ADD A,06H MOVC A,@A+PC MOV P1,A ACALL DELAY SJMP DISPLYDTAB:DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90HDB 88H,83H,0C6H,0A1H,86H,8EH,0FFH,0CH,89H,7FH,0BFH DELAY: MOV R7,0AHDELAY1:MOV R6,0FFHDELAY2:MOV R5,03H DELAY3:DJNZ R5,DELAY3 DJNZ R6,DELAY2 DJNZ R7,DELAY1 RET END74HC595四位穩(wěn)定顯示：1）最大數(shù)為9999的計數(shù)器 ORG 0000H AJMP MAIN ORG 000BH AJMP CRT0 ORG 0020HMAIN:MOV R1,33H MOV R2,04HCLEAR:MOV @R1,33H DEC R1 DJNZ R2,CLEAR MOV SP,60H MOV TMOD,01H MOV TH0,3CH MOV TL0,0B0H SETB EA SETB ET0SETB TR0 MOV R7,1 MOV DPTR,DTABLOOP: MOV R1,33H MOV R2,04H MOV R3,08H MOV R4,01HLOOP1:MOV A,R3 MOV P2,A RR A MOV R3,A MOV A,@R1 CJNE R4,00H,MODEXSH: LCALL DIS LCALL DELDEC R1DJNZ R2,LOOP1 AJMP LOOPMODE: CJNE A,00H,FH MOV R4,01H MOV A,0AH SJMP XSHFH: MOV R4,00H SJMP XSHCRT0: DJNZ R7,RRR MOV R7,1 INC 30H MOV R0,30H CJNE R0,0AH,RRR MOV 30H,00H INC 31H MOV R0,31H CJNE R0,0AH,RRR MOV 31H,00H INC 32H MOV R0,32H CJNE R0,0AH,RRR MOV 32H,00H INC 33H MOV R0,33H CJNE R0,0AH,RRR MOV 33H,00HRRR: MOV TH0,3CH MOV TL0,0B0H RETIDIS: MOVC A,@A+DPT