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An information system collects, stores, and disseminates information from an organization's environment and internal operations to support organizational functions and decision making, communication, coordination, control, analysis, and visualization.

information system, an integrated set of components for collecting, storing, and processing data and for providing information, knowledge, and digital products. ... Information systems are used to run interorganizational supply chains and electronic markets.

At the most basic level, an information system (IS) is a set of components that work together to manage data processing and storage. Its role is to support the key aspects of running an organization, such as communication, record-keeping, decision making, data analysis and more.Nov 2, 2018

The MIS helps in strategic planning, management control, operational control and transaction processing. The MIS helps in the clerical personal in the transaction processing and answers the queries on the data pertaining to the transaction, the status of a particular record and reference on a variety of documents.Sep 1, 2014

Information systems are made up of five different functions: input, storage, processing, output and feedback loop.

Management Information Systems or MIS is most often used by managers, specifically the middle-level management.

MIS provides regular information to managers to allow them to make decisions based on data rather than guesses. Certain data and analysis can play a very useful role in making good decisions about where and when to use human and other resources to achieve the mission of an organization.

Information systems perform functions such as gathering input data, storing it, processing it and then producing output information. They also control this information flow as well as the feedback loop.

There are four main equipment functions of a computer system: Input, Processing, Storage and Output.