Information System

Nowadays, society become dependent on information systems. Information systems has help people in their daily life routine. Information system itself bring the meaning of business application in the computer that manage their operations, compete in the market place, accounts and manage human resources.

An information system can be defined technically as a set of interrelated components that collect or retrieve, process, store, and distribute information to support decision making and control in an organization. In addition to supporting decision making, coordination, and control, information systems may also help managers and workers analyze problems, visualize complex subjects, and create new products.
Three activities in an information system produce the information that organizations need to make decisions, control operations, analyze problems, and create new products or services. These activities are input, processing, and output. Input captures or collects raw data from within the organization or from its external environment. Processing converts this raw input into a more meaningful form. Output transfers the processed information to the people who will use it or to the activities for which it will be used. Information systems also require feedback, which is output that is returned to appropriate members of the organization to help them evaluate or correct the input stage.

                               Functions of an Information System