ECONOMICS

Detailed explanation-1: -Information systems use data stored in computer databases to provide needed information. A database is an organized collection of interrelated data reflecting a major aspect of a firm’s activities. 1. Information systems capture data from the organization (internal data) and its environment (external data).

Detailed explanation-2: -Input is anything we wish to embed in a system for some type of use. A variety of sources are used to input: keyboard, scanner, microphone, mouse, even another computer.

Detailed explanation-3: -An information system designed to facilitate top level management undertake a strategic decision is called executive information system. Executive Information systems contain both primary as well as secondary data. The information system provides summary of information in a required format.

Detailed explanation-4: -An information system contains information about an organization and its surrounding environment. Three basic activities-input, processing, and output-produce the information organizations need. Feedback is output returned to appropriate people or activities in the organization to evaluate and refine the input.