???????????????T0???????????????????
???????????????T0????????1??,??P1.0????????1ms??????????????????????????????6MHZ??
??(1)?????????X????ù??X=216-t(f/12)
(2)д???????嵥
????X=216-t(F/12)
=216-0.5*10-3*6*106/12
=FF06H
ORG 3000H
START:MOV TMOD,#01H
MOV TL0,#06H
MOV THO,#FFH
SETB TR0
LOOP: JBC TFO,DONE
SJMP LOOP
DONE: MOV TL0,#06H
MOV THO,#FFH
CPL P1.0
SJMP LOOP
????admin ?????????2018-05-18
