The industry standard parallel printer connector (often referred to as a Centronix interface) is a 36 position, female, Champ connector. This table shows the common definition of most pins on the industry standard parallel printer connector.

     Pin      Description               Direction
    ---------------------------------------------------------------
       1       Data Strobe, DST\        to printer
       2       D0                       to printer
       3       D1                       to printer
       4       D2                       to printer
       5       D3                       to printer
       6       D4                       to printer
       7       D5                       to printer
       8       D6                       to printer
       9       D7                       to printer
      10       Acknowledge, ACK\        from printer
      11       Busy, BSY                from printer
      12       Paper Empty, PE          from printer
      13       Selected, SEL            from printer
      14       *
      15       *
      16       Signal ground, SG        n/a
      17       Chassis ground, CG       n/a
      18       +5 volts                 from printer
      19-30    Ground                   n/a
      31       Printer reset, PI\       to printer
      32       Error, ERR\              from printer
      33       Ground                   n/a
      34-36    *

     * Nonstandard definition for these pins.