Gary B. Shelly Discovering computers 2011 : living in a digital world : introductory / - Boston : course technology, Cengage learning, c2011. - xxiv, (various paging) : col. ill. ; 28 cm. Includes index. ISBN: 9780538479332 Subjects--Topical Terms: 1. Computers.2. Computer science.3. Computer networks. Dewey Class. No.: Circ. 004 S545d 2011