Computing Essentials 2025: 2024 Release ISE

Tim O'Leary has taught courses at Stark Technical College in Canton, Ohio, and at Rochester Institute of Technology in upstate New York. He currently is a professor emeritus at Arizona State University. Linda O'Leary offered her expertise at Arizona State University for several years as an academic advisor. She also presented and developed materials for major corporations, such as Motorola, Intel, Honeywell, and AT&T, as well as various community colleges in the Phoenix area. Dan O'Leary completed his Ph.D. in electrical engineering and has had significant experience in teaching and consulting in information technology. Dr. O'Leary has taught at the University of California at Santa Cruz and at City College of San Francisco, developed energy-related labs at NASA, and worked as a database administrator and as a consultant in information systems.

• 1 Information Technology, the Internet, and You 2 The Internet, the Web, and Electronic Commerce 3 Application Software 4 System Software 5 The System Unit 6 Input and Output 7 Secondary Storage 8 Communications and Networks 9 Privacy, Security, and Ethics 10 Information Systems 11 Databases 12 Systems Analysis and Design 13 Programming and Languages The Evolution of the Computer Age The Computer Buyer’s Guide