led.asm

51单片机程序

ORG 0000H ; 
LJMP MAIN ;
ORG 030H ;
MAIN: MOV P0,#0DBH ;11011011--零为亮
ACALL DELay ;
MOV P0,#06DH ;01101101
ACALL DELay ;
MOV P0,#0B6H ;10110110
ACALL DELay ;
AJMP MAIN ;
delay: mov r7,#255 ;延时子程序
d1: mov r6,#255
d2: djnz r6,d2
djnz r7,d1
ret
end