流水灯,采用定时器延时的
ORG 0000HLJMP MAIN
ORG 000BH
LJMP DVT0
ORG 0100H
MAIN: MOV TMOD,#01H
MOV TH0,#3CH
MOV TL0,#0B0H
MOV R0,#20H
MOV A,#0FEH
MOV P1,A
SETB ET0
SETB EA
SETB TR0
SJMP $
DVT0: RL A
MOV P1,A
RETI
END
看看这程序都吗?
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