Computing Essentials: 2026 Evergreen Release: 2026 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 You2 The Internet, the Web, and Electronic Commerce3 Application Software4 System Software5 The System Unit6 Input and Output7 Secondary Storage8 Communications and Networks9 Privacy, Security, and Ethics10 Information Systems11 Databases12 Systems Analysis and Design13 Programming and LanguagesAppendicesThe Evolution of the Computer AgeThe Computer Buyer’s Guide