单片机原理及接口技术结课报告——键盘输入及显示(编辑修改稿)内容摘要：
MOV P1,A MOV A,P1 ANL A,0FH MOV R5,A CJNE A,0FH,LOOP2 INC R0 DJNZ R7,LOOP1 JMP LOOP3 LOOP2:MOV R4,0A0H TFF:ACALL DELAY1mS DJNZ R4,TFF SS: MOV A,0FFH MOV P1,A MOV A,P1 ANL A,0FH CJNE A,0FH,SS MOV A,42H CJNE A,01H,NEXT1 MOV 40H,00H MOV 42H,00H NEXT1: CJNE @R0,0E0H,ROW2KEY MOV A,R5 ORL A,@R0 CJNE A,0EEH,KEY2 MOV A,40H CJNE A,08H,TW1 ACALL WARNNING JMP LOOP3 TW1:INC 40H MOV A,07H MOV 43H,A ACALL MOVE ACALL CHANGE11 JMP LOOP3 KEY2:CJNE A,0EDH,KEY3 MOV A,40H CJNE A,08H,TW2 ACALL WARNNING JMP LOOP3 TW2: INC 40H MOV A,08H MOV 43H,A ACALL MOVE ACALL CHANGE11 JMP LOOP3 KEY3:CJNE A,0EBH,KEY4 MOV A,40H CJNE A,08H,TW3 ACALL WARNNING JMP LOOP3 TW3:MOV A,09H INC 40H MOV 43H,A ACALL MOVE ACALL CHANGE11 JMP LOOP3 KEY4:ACALL JUDEG ACALL CHANGE 1 MOV 42H,01H MOV 41H,04H JMP LOOP3 ROW2KEY:CJNE @R0,0D0H,ROW3KEY MOV A,R5 ORL A,@R0 CJNE A,0DEH,KEY5 MOV A,40H CJNE A,08H,TW4 ACALL WARNNING JMP LOOP3 TW4:INC 40H MOV A,04H MOV 43H,A ACALL MOVE ACALL CHANGE11 JMP LOOP3 KEY5:CJNE A,0DDH,KEY6 MOV A,40H CJNE A,08H,TW5 ACALL WARNNING JMP LOOP3 TW5:MOV A,05H INC 40H MOV 43H,A ACALL MOVE ACALL CHANGE11 JMP LOOP3 KEY6:CJNE A,0DBH,KEY7 MOV A,40H CJNE A,08H,TW6 ACALL WARNNING JMP LOOP3 TW6:MOV A,06H INC 40H MOV 43H,A ACALL MOVE ACALL CHANGE11 JMP LOOP3 KEY7:ACALL JUDEG ACALL CHANGE MOV 42H,01H MOV 41H,03H JMP LOOP3 ROW3KEY:CJNE @R0,0B0H,ROW4KEY MOV A,R5 ORL A,@R0 CJNE A,0BEH,KEY8 MOV A,40H CJNE A,08H,TW7 ACALL WARNNING JMP LOOP3 TW7:MOV A,01H INC 40H MOV 43H,A ACALL MOVE ACALL CHANGE11 JMP LOOP3 KEY8:CJNE A,0BDH,KEY9 MOV A,40H CJNE A,08H,TW8 ACALL WARNNING JMP LOOP3 TW8:MOV A,02H INC 40H MOV 43H,A ACALL MOVE ACALL CHANGE11 JMP LOOP3。阅读剩余 0%
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