Geoghan, Debra. creator text Boston Pearson Prentice Hall c2012 monographic xxiv, 527 p: illustrations (some color) ; What is a computer? -- Hardware -- File management -- Digital devices and multimedia -- Application software -- System software -- The Internet -- Communicating and sharing: the social web -- Networks and communication -- Security and privacy -- Databases -- Program development. Includes index. Microcomputers Computer science Micro-ordinateurs Informatique Computer science Microcomputers QA 76.5. GEO 9780137056347 0137056346 9780137056026 0137056028