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  Include:  <conio.h>
 
  Syntax:   int inp( unsigned port );
            unsigned inpw( unsigned port );
 
            int outp( unsigned port, int databyte );
            unsigned outpw( unsigned port, unsigned dataword );
 
  Returns:  (inp) the byte read from port.
            (inpw) the word that was read.
            (outp) the byte output.
            (outpw) the word output.
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