00804cam a2200241 a 450000100090000000300040000900500170001300800410003002000180007104000180008905000240010708200120013110000220014324501500016525000120031526000410032730000380036850400510040665000150045765000310047265000280050370000310053112782445OSt20150408113926.0020520s2003    maua     b    001 0 eng    a9780071112420  aDLCcDLCdDLC00aQA76.5b.S2193 200300a0042211 aSawyer, Stacey C.10aUsing information technology :ba practical introduction to computers & communications : complete version /cStacey C. Sawyer, Brian K. Williams.  a6th ed.  aBoston :bMcGraw-Hill/Irwin,cc2005.  axxix, 482 p.bcol. ill. ;c28 cm.  aIncludes bibliographical references and index. 0aComputers. 0aTelecommunication systems. 0aInformation technology.1 aWilliams, Brian K.,d1938-