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Toggle port 1 usning timer


Toggle port 1 usning timer
 org 00h
 mov TMOD,#01h
abov: mov P1,#55h
 acall delay
 mov P1,#0aah
 acall delay
 sjmp abov
delay: mov TH0,#0ffh
       mov TL0,#00h
  setb TR0
  here:jnb TF0,here
  clr TF0
  ret
  end
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