void Show(u16 reg)
{
  u8 i=0;

  for(i=0;i<=15;i++)
  {
    if(reg&(1<<i))
    { SetBit(SHOWPORT,SHOWOUT);
      wait100us();
      ClrBit(SHOWPORT,SHOWOUT);
      wait20us();
      wait50us();
    }
    else
    {
      SetBit(SHOWPORT,SHOWOUT);
      wait20us();
      ClrBit(SHOWPORT,SHOWOUT);
      wait100us();
      wait50us();
    }
   }
}