What are the four types of information systems that managers use?

Managers typically use four types of information systems: Transaction Processing Systems (TPS) for day-to-day operations and data collection, Management Information Systems (MIS) for generating reports and summarizing data for decision-making, Decision Support Systems (DSS) to analyze complex data and support strategic decisions, and Executive Information Systems (EIS) that provide top executives with easy access to internal and external information relevant to their goals. Each system serves a distinct purpose, helping managers at different levels of the organization make informed decisions.