   1
  16
    1
-----------------------------------------------------
      1/16000000 = 0,0000000625
     1  1/1000 = 0,001
   0,001/ 0,0000000625 = 16000 -            1          16000
       16000/2 = 8000
   (_1).
---------------------------------------------------------
         200 ( 
   .     
      .)

  8000/200 = 40 (  .               .        003   
    40+40+40 = 120)

     CodeVisionAVR  (_1, _4)

              OCR1A, OCR1B _1
  
  
  