Information systems and information systems management, like the rest of the industrial world, have made the transition into the computer age. The constantly changing business world is starting to demand more from management executives than ever before. The explosion of computer and communications technology, the growing of the global business community, and the need to keep up with these and many more factors are demanding that management executives react quickly and effectively to changing business conditions. To adapt to this need for immediate knowledge of a given situation, many large corporations have begun to appoint chief information officers (CIO) to update and integrate their existing systems into a more modern totally integrated information system (LaPlante, 1990). The information system, then, is an integration of all computer systems in a given corporation and includes marketing, management, production, distribution, promotion, operation, and communications. By having all relevant systems integrated, there will be fewer problems with communication to or from any one part of the company, enabling management to streamline costs, cut waste, and be aware of the day to day operations as well as any market factors. Such systems would place a stronger emphasis on the strategic importance of being able to adapt quickly to all market environments and situations. This paper will introduce the history and structure of the integrated information system. Dealing primarily with the computerized information system, the role of management of the information system will be reviewed along a current example of a system of operation. There will be a review of the primary structure of a computerized system. This will include input, output, storage, control, processing, and computer languages. Computer technology in the decision-making process will be discussed along with pipelining, decision support systems, and system management. ...