Williams, Brian K. <br/><br/>Using information technology:  a practical introduction to computers & communication / Brian K. Williams and Stacey C. Sawyer.   -- 7th ed.  -- USA:  McGraw-Hill Companies, Inc.,  2007.  <br/>v, 554 p. ;  col. ill.  27 cm.  <br/><br/> Includes bibliographical references and index. <br/><br/><label>ISBN: </label>9780071107686 <br/><br/><label>Subjects--Topical Terms: </label><br/>Computers.<br/> Telecommunication systems.<br/>Information technology.<br/><br/><label>Dewey Class. No.: </label>Res 004 W670 2007