00741nam a2200217 a 45000010006000000050017000060080041000230200018000640200015000820500023000971000031001202450138001512500012002892600052003013000027003535040050003806500014004306500030004446500027004747000022005012208020230531230620.0110524s2010    us m         a001 0 eng d  a9780071221399  a0071221395 4aQA76.5b.W721 20101 aWilliams, Brian K.,d1938-10aUsing information technology :ba practical introduction to computers & communications /cBrian K. Williams, Stacey C. Sawyerh[book]  a9th ed.  aBoston :bMcGraw-Hill/Higher Education,cc2010.  axxviii, 577 p. :bill.  aIncludes bibliographical references and index 0aComputers 0aTelecommunication Systems 0aInformation technology1 aSawyer, Stacey C.