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JNB P3.2,B0 JMP JE

DH: MOV P1,#0F3H ;Ö»ÔÊÐíÄϱ±·½Ïò³µÁ¾Í¨ÐÐ SETB P2.6 SETB P2.7

ACALL DELAY JNB P3.2,B0 JMP JE JE:

POP P2 POP P1 POP 60H SETB EA RETI

IINT1: ;ͨÐÐʱ¼ä¼Ó¼õ³ÌÐò CLR EA JB P3.3,$ PUSH P1 PUSH P2

B1: JNB P3.1,DDEC

IINC: JNB P3.0,SINC ;¼Ó1³ÌÐò ZINC: ;×Ô¶¯¼Ó1 MOV R0,#15 A10: ACALL BCD

ACALL DISPCLK DJNZ R0,A10 MOV A,60H ADD A,#01H DA A MOV 60H,A JNB P3.3,B1 JMP JS

SINC: ;ÊÖ¶¯¼Ó1 MOV R3,#20 A11: ACALL BCD

ACALL DISPCLK DJNZ R3,A11 MOV A,60H ADD A,#01H DA A MOV 60H,A B2: JB P3.3,JS JNB P3.4,SINC

JMP B2

DDEC: ;¼õ1³ÌÐò JNB P3.0,SDEC ZDEC:

MOV R4,#15 A12: ACALL BCD

ACALL DISPCLK DJNZ R4,A12 MOV A,60H ADD A,#99H DA A

MOV 60H,A JB P3.3,JS JMP B1

SDEC: ;ÊÖ¶¯¼õ1³ÌÐò MOV R5,#20 A13: ACALL BCD

ACALL DISPCLK DJNZ R5,A13 MOV A,60H ADD A,#99H DA A

MOV 60H,A B3: JB P3.3,JS

JNB P3.4,SDEC JMP B3

JS: MOV 61H,60H POP P2 POP P1 SETB EA RETI

;10MSÑÓʱ

DELAY: MOV R6,#25 DEL1: MOV R7,#200 DEL2: DJNZ R7,DEL2 DJNZ R6,DEL1 RET

TAB: DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H END

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