O'Leary, Timothy J., 1947- Computing essentials 2006 / Timothy J. O'Leary, Linda I. O'Leary. - Complete ed. - Boston, Mass. : McGraw-Hill Technology Education, 2006. - xxviii, 514 p. : col. ill. ; 28 cm. - The O'Leary series . - O'Leary, Timothy J., 1947- O'Leary series . Includes index. ISBN: 0072261102 (pbk. : alk. paper) Subjects--Topical Terms: Computers.Electronic data processing. LC Class. No.: QA76.5 / .O425 2006 Dewey Class. No.: 004