00837cam a2200253 a 450000100090000000300040000900500170001300800410003001000170007102000150008804000180010305000240012108200120014510000220015724501540017925000120033326000410034530000410038650400510042765000150047865000310049365000280052470000310055212782445OSt20170302122450.0020520s2003    maua     b    001 0 eng    a  2002279948  a0072484640  aDLCcDLCdDLC00aQA76.5b.S2193 200300a0042211 aSawyer, Stacey C.10aUsing information technology :ba practical introduction to computers & communications : introductory version /cStacey C. Sawyer, Brian K. Williams.  a5th ed.  aBoston :bMcGraw-Hill/Irwin,cc2003.  axxvii, 324 p. :bcol. ill. ;c28 cm.  aIncludes bibliographical references and index. 0aComputers. 0aTelecommunication systems. 0aInformation technology.1 aWilliams, Brian K.,d1938-