基于at89s52單片機(jī)的頻率計(jì)設(shè)計(jì)報(bào)告-閱讀頁(yè)
2025-04-07 06:32本頁(yè)面
【正文】 TB TR0 RETIDELAY: MOV R7,03HDL1: MOV R6,88HDL0: MOV R5,04H DJNZ R5,$ DJNZ R6,DL0 DJNZ R7,DL1 RETDISPLAY: MOV R0,06H MOV R1,40HDISPLAY1: MOV R1,00H INC R1 DJNZ R0,DISPLAY1 MOV A,RESULT3 MOV B,0AH DIV AB MOV 40H,A MOV A,B SWAP A MOV B,A MOV A,RESULT2 SWAP A ANL A,0FH ORL A,B MOV B,0AH DIV AB MOV 41H,A MOV A,B SWAP A MOV B,A MOV A,RESULT2 ANL A,0FH ORL A,B MOV B,0AH DIV AB MOV 42H,A MOV A,B SWAP A MOV B,A MOV A,RESULT1 SWAP A ANL A,0FH ORL A,B MOV B,0AH DIV AB MOV 43H,A MOV A,B SWAP A MOV B,A MOV A,RESULT1 ANL A,0FH ORL A,B MOV B,0AH DIV AB MOV 44H,A MOV 45H,B 。十位 MOV A,40H SWAP A ADD A,41H MOV B,0AH DIV AB MOV 40H,A MOV A,B SWAP A ADD A,42H MOV B,0AH DIV AB MOV 41H,A MOV A,B SWAP A ADD A,43H MOV B,0AH DIV AB MOV 42H,A MOV 43H,B 。千位 MOV A,40H SWAP A ADD A,41H MOV B,0AH DIV AB MOV 41H,B 。十萬(wàn)位 MOV R0,40H MOV DISP_COUNT,00HCHECK_ZERO: MOV A,R0 JZ CHECK_ZERO1 JMP CHECK_ZERO2CHECK_ZERO1:INC R0 INC DISP_COUNT CJNE R0,46H,CHECK_ZEROCHECK_ZERO2:MOV A,40H ADD A,DISP_COUNT MOV R0,A MOV COM,84H LCALL WR_COMWRITE: MOV DAT,R0 LCALL WR_DAT INC R0 CJNE R0,46H,WRITE 。LCALL WR_COM MOV DPTR,TABLE CLR A MOVC A,A+DPTR MOV DAT,A LCALL WR_DAT1 INC DPTR CLR A MOVC A,A+DPTR MOV DAT,A LCALL WR_DAT1 RETTABLE: DB Hz END
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