Synopsis Management Information System is that part of management information which provides information for taking the decision in the organization. It includes Decision Support System, Management Reporting System, Transaction Processing System, Office Automation System, Transaction Processing System and Security areas. Fundamentals o hardware and software which are to be used for the better procurement of information in the organization is also appended in this text. The information contained herein is substantially based on authoritative sources. As such this will serve a dependable text-cum-reference work to one and all.