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发表于 2004-3-3 14:34:19
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显示全部楼层
程序改错
ORG 0000H
WAIT: JB P3.2,WAIT
MOV R0,#7
MOV A,#0FEH
MOV P1,A
LOOP: JB P3.2,WAIT
MOV R1,#250
DELAY: DJNZ R1,DELAY
RL A
MOV P1,A
DEC R0
DJNZ R0,LOOP
MOV R0,#7
LOOP1: JB P3.2,WAIT
MOV R1,#250
DELAY1: DJNZ R1,DELAY1
RR A
MOV P1,A
DEC R0
DJNZ R0,LOOP1
MOV R0,#7
AJMP LOOP
不知道对不对啊,,呵呵
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