This text is a comprehensive and current introduction to computer concepts, information systems, hardware, software applications, data communications, and the social and ethical issues surrounding computers and information systems. A flexible text structure adjusts to a quarter or semester system and to the information needs of both majors and non-majors; optional sub-chapters called "Infomodules" provide detailed treatments of selected topics. Full-color photographs and computer graphics displays and illustrations enhance text material; and the text discussions are non-technical, with emphasis on how, why, and where computers and software work to perform tasks and solve problems. Coverage of ethical issues, current hardware and software technologies and issues, communications, networks, information systems basics and trends, object-oriented design, current system and application software, international issues, and careers in computer fields conveys a full and accurate picture of developments--and new directions--through the 90s