新建 文本文档.txt

单片机89c51流水灯计数器程序。同时还有嗡鸣器响

rehttp://hi.baidu.com/wsfmm/blog/item/e9caad59a14df2d99c8204b5.html

















ORG 0000H
LJMP START
ORG 0030H
START:MOV P1,#0FEH
CLR P2.7
CLR P2.6 
MOV P0,#06H
LCALL DELAY
MOV P1,#0FDH
MOV P0,#5bH
LCALL DELAY
MOV P1,#0FBH
MOV P0,#4fH
LCALL DELAY
MOV P1,#0F7H
MOV P0,#66H
LCALL DELAY
MOV P1,#0EFH
MOV P0,#6dH
LCALL DELAY
MOV P1,#0DFH
MOV P0,#7dH
LCALL DELAY
MOV P1,#0BFH
MOV P0,#07H
LCALL DELAY
MOV P1,#7FH
MOV P0,#7fH
LCALL DELAY
MOV P1,#0FFH
MOV P0,#3FH
LCALL DELAY
MOV P0,#06H
LCALL DELAY
MOV P0,#5bH
LCALL DELAY
MOV P0,#4fH
LCALL DELAY
MOV P0,#66H
LCALL DELAY
MOV P0,#6dH
LCALL DELAY
MOV P0,#7DH
LCALL DELAY
MOV P0,#07H
LCALL DELAY
MOV P0,#7FH
LCALL DELAY
MOV P0,#6fH
LCALL DELAY
MOV P0,#77H
LCALL DELAY
MOV P0,#7CH
LCALL DELAY
MOV P0,#39H
LCALL DELAY
MOV P0,#5EH
LCALL DELAY
MOV P0,#79H
LCALL DELAY
MOV P0,#71H
LCALL DELAY
MOV P0,#76H
LCALL DELAY
MOV P0,#6EH
LCALL DELAY
MOV R4,#9
LOOP:SETB P2.0
LCALL DELAY
CLR P2.0
LCALL DELAY
DJNZ R4,LOOP
SETB P2.0
LJMP START
DELAY:MOV R7,#100
D1:MOV R6,#100
D2:MOV R5,#50
D3: DJNZ R5,D3
DJNZ R6,D2
DJNZ R7,D1
RET
END