單片機(jī)原理及接口技術(shù)結(jié)課報(bào)告——鍵盤(pán)輸入及顯示-全文預(yù)覽
【正文】 4 MOV R0,38H MOV R1,43H MOV R3,02H ACALL MAKEADD TA2: RET CHANGE:MOV 40H,00H MOV R0,30H MOV R7,3CH MOV R6,3DH TD1: MOV R5,00H MOV R4,00H MOV R2,00H MOV R3,0AH INC 40H ACALL MAKEDIV MOV A,R5 MOV R0,A INC R0 MOV A,R6 CJNE A,00H,TD1 MOV A,R7 CJNE A,00H,TD1 RET JUDEG:MOV A,3AH JZ JUD1 ACALL ERROR LJMP LOOP3 JUD1:MOV R1,38H MOV A,41H CJNE A,00H,TB MOV 3CH,R1 INC R1 MOV 3DH,R1 JMP TBB 4 TB: CJNE A,01H,TB1 MOV R0,3CH MOV R3,02H ACALL MAKEADD MOV A,R3 CJNE A,03H,JUD2 ACALL ERROR LJMP LOOP3 JUD2:JMP TBB TB1:CJNE A,02H,TB2 MOV R0,3CH MOV R3,02H ACALL MAKESUB JNB 07H,JUD4 ACALL ERROR LJMP LOOP3 JUD4:JMP TBB TB2:CJNE A,03H,TB3 MOV R3,3CH MOV R2,3DH MOV R6,39H MOV R7,38H ACALL MAKEMUL MOV 3DH,R6 MOV 3CH,R7 MOV 3EH,R5 MOV 3FH,R4 MOV A,R5 JZ JUD3 ACALL ERROR LJMP LOOP3 JUD3: JMP TBB TB3:MOV R7,3CH MOV R6,3DH MOV R5,00H MOV R4,00H MOV R2,39H MOV R3,38H ACALL MAKEDIV MOV 3CH,R7 MOV 3DH,R6 JNB F0,TBB ACALL ERROR LJMP LOOP3 TBB:MOV 38H,00H MOV 39H,00H MOV 3AH,00H MOV 3BH,00H RET WARNNING: CLR SETB MOV R4,0FFH TFg:ACALL DELAY1mS DJNZ R4,TFg RET ERROR:MOV R0,30H MOV A,0AH MOV R5,08H MOV 40H,08H ET: MOV R0,A INC R0 INC A DJNZ R5,ET RET DISPLAY:MOV DPTR,TABLE1 MOV R0,30H MOV R1,80H MOV R5,40H NEXTF:MOV P2,R1 MOV A,R0 MOVC A,A+DPTR MOV P0,A ACALL DELAY1mS MOV A,P2 RR A MOV R1,A INC R0 MOV A,R5 JZ AA DJNZ R5,NEXTF AA: RET DELAY1mS:MOV R7,02H DL: MOV R6,0FFH DL6:DJNZ R6,DL6 DJNZ R7,DL RET TABLE1: DB 0C0H, 0F9H, 0A4H, 0B0H, 99H DB 92H, 82H, 0F8H, 80H, 90H 5 DB 0CEH,0C0H,0CEH,0CEH,86H,0FFH,0FFH,0FFH END 。 40H 輸入數(shù)據(jù)個(gè)數(shù) ,41H 加減乘除標(biāo)志位 50－ 53 行地址。 鍵入等號(hào)“＝”顯示結(jié)果 15。 鍵入乘號(hào)“ *”，顯示上一次鍵入的數(shù)，等待鍵入乘數(shù)，鍵入乘數(shù)“ 3”顯示 3。 4．鍵入被減數(shù) 900，顯示 900。 鍵入“ +”顯示原來(lái)鍵入的數(shù)值，等待鍵入加數(shù)。 40H 單元 輸入數(shù)據(jù)個(gè)數(shù) ,41H 單元 加減標(biāo)志
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鄂ICP備17016276號(hào)-1