基于89c51的數(shù)字電子鐘設(shè)計(jì)-閱讀頁(yè)
2025-02-02 14:07本頁(yè)面
【正文】 I:JB ,RETURNLCALL DELY10MSJB ,RETURNINC 32HMOV A,32HCJNE A,24,NH24MOV 32H,00HNH24:LCALL DISPJNB ,$RETURN: LJMP ADDMIAO DELY10MS:MOV R6,10MOV R6,10D1:MOV R7,248DJNZ R7,$ DJNZ R6,D1RETDISP: MOV A,40HADD A,8DEC AMOV R1,A MOV A,32H MOV B,10 DIV ABMOV R1,A DEC R1 MOV A,B MOV R1,A DEC R1MOV A,10 MOV R1,A DEC R1MOV A,31H MOV B,10 DIV AB MOV R1,A DEC R1 MOV A,BMOV R1,A DEC R1MOV A,10 MOV R1,A DEC R1 MOV A,30H MOV B,10 DIV ABMOV R1,A DEC R1 MOV A,B MOV R1,A DEC R1 RETINT_T0: MOV TH0,248 MOV TL0,248MOV A,40H ADD A,48H MOV R0,A MOV A,R0MOV DPTR,TABLEMOVC A,A+DPTR MOV P2,0FFH MOV P0,AMOV A,48H MOV DPTR,TABMOVC A,A+DPTR MOV P2,AINC 48H MOV A,48H CJNE A,08H,KNAMOV 48H,00HKNA:INC 49HMOV A,49H CJNE A,100,DONEMOV 49H,00H INC 4AH MOV A,4AH CJNE A,05H,DONE MOV 4AH,00H INC 30HMOV A,30HCJNE A,60,NEXT MOV 30H,00H INC 31H MOV A,31HCJNE A,60,NEXT MOV 31H,00H INC 32H MOV A,32HCJNE A,24,NEXT MOV 32H,00HNEXT:LCALL DISPDONE:RETITABLE:DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,00HTAB:DB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,07FHEND13
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