單片機(jī)課程設(shè)計---出租車計費(fèi)系統(tǒng)(編輯修改稿)
2025-02-12 11:07 本頁面
【文章內(nèi)容簡介】 ACALL DELAY RETDELAY: MOV R5,01H LOOP1: MOV R6,248 DJNZ R6,$ DJNZ R5,LOOP1 RETSEGTAB: DB 3FH,06H,5BH,4FH,66H DB 6DH,7DH,07H,7FH,6FH END ORG 0000H LJMP MAIN ORG 001BH LJMP L1 ORG 0030H MAIN: MOV 70H,0 MOV 71H,0 MOV 72H,0 MOV 73H,0 MOV 74H,0 MOV 75H,0 MOV TMOD,01100000B MOV TH1,255 MOV TL1,255 SETB TR1 L1: JNB TF1,L3 CLR TF1 LCALL COUNT L3: LCALL DISPLAY SJMP L1 COUNT: MOV R1,70H L2: INC @R1 CJNE @R1,10,BTOM MOV @R1,0 INC R1 CJNE R1,76H,L2 MOV R1,70H BTOM: RET DISPLAY: MOV R0,70H MOV R3,0 MOV DPTR,SEG L4: MOV A,@R0 MOVC A,@A+DPTR MOV P2,R3 MOV P0,A INC R0 INC R3 LCALL D6MS MOV P0,0FFH CJNE R3,6,L4 RET SEG: 。DB 3FH,06H,5BH,4FH,66H 。0,1,2,3,4 。DB 6DH,7DH,07H,7FH,6FH 。5,6,7,8,9 DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H DB 80H,90H D6MS: MOV R7,3 DL: MOV R6,10 DJNZ R6,$ DJNZ R7,DL RET
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鄂ICP備17016276號-1