Shelly, Gary B. Discovering computers your interactive guide to the digital world Gary B. Shelly, Misty E. Vermaat. - Boston, Mass. Course Technology/Cengage Learning c2012. - xxiv, 830 p. col. ill. 27 cm. - Shelly Cashman series. . Includes index. ISBN: 1111530327 9781111530327 Subjects--Topical Terms: Computer science.Computers. LC Class. No.: QA76.5 / .S545 2012