MOV P0,A CLR P0.7/* LCALL DELAY CLR P2.1 RET
DELAY:MOV R7,#10 /*延时2.5ms*/ LOOP:MOV R6,#250
DJNZ R6,$ DJNZ R7,LOOP RET
TAB:DB 0C0H,0F9H,0A4H,0B0H,99H
DB 92H,82H,0F8H,80H,90H
END
将小数点点亮*/
- 26 -
MOV P0,A CLR P0.7/* LCALL DELAY CLR P2.1 RET
DELAY:MOV R7,#10 /*延时2.5ms*/ LOOP:MOV R6,#250
DJNZ R6,$ DJNZ R7,LOOP RET
TAB:DB 0C0H,0F9H,0A4H,0B0H,99H
DB 92H,82H,0F8H,80H,90H
END
将小数点点亮*/
- 26 -