Using information technology : a practical introduction to computers & communications : brief version / Stacey C. Sawyer, Brian K. Williams, Sarah E. Hutchinson. Sawyer, Stacey C. Williams, Brian K., 1938- Clifford, Sarah Hutchinson. Computers. Telecommunication systems. Information technology. QA76.5 .S2193 1997 004 20 SAU Includes bibliographical references (p. 320-322) and index. Chicago : Irwin, c1997. c1997. 1997 Text xxx, 330 p. : eng