00563nam a22001337a 4500020002400000020002100024082001400045100009300059245007200152260003500224300004100259500003300300650009600333  a9781111530488 (pbk)  a1111530483 (pbk)  a004	bDIS  aGary B. Shelly aMisty E. VermaataJeffrey J. Quasney aSusan L. SebokaSteven M.Freund   aDiscovering computersbyour interactive guide to the digital world   aBostonbCengage Learningc2012  axxiv, 616 p.b: ill. Col.,c; 27 cm.  aIncludes appendices & index.  aComputer science	vComputers	vInternetvProgrammingvComputer networksvWorld wide webvFC