This document provides a comprehensive overview of Management Information Systems (MIS), defining its purpose as a system designed to support management decision-making through the collection, processing, and dissemination of information. It outlines the characteristics, components, types, benefits, and outputs of MIS, emphasizing its role in improving efficiency and facilitating communication within organizations. The document also highlights the comparison of MIS to the heart of an organization, underscoring its critical importance in strategic planning and operational control.