Information system
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This document discusses information technology and information systems. It defines information technology as the use of computers to store, retrieve, and manipulate data, while an information system refers to a set of components that collect, manipulate and disseminate data to meet objectives. It identifies five types of information subsystems: transaction processing systems, business expert systems, manufacturing and production systems, human resource systems, and finance and accounting systems. For each subsystem type, it provides brief descriptions of their functions and examples.
Information system
- 2. INTRODUCTION TO INFORMATION TECHNOLOGY INFORMATION TECHNOLOGY (IT): IT refers to all the computer based information systems used by organizations and their underlying technology. IT is the use of computers to store, retrieve, and manipulate data or information. Information technology is the study, design, development, implementation, support or management of computer-based information systems-particularly software applications and computer hardware.
- 3. INTRODUCTION TO INFORMATION SYSTEM INFORMATION SYSTEM: This refers to a set of interrelated components that collect, manipulate, and disseminate data and information and provide feedback to meet an objective. FOR EXAMPLE: ATMs, airline reservation systems etc. MIS helps organize complicated information, so decision making becomes easier right from simple low-level decisions to strategic plans made at the top level of management.
- 4. 5 TYPES OF SUBSYSTEMS Transaction processing system Business expert system Manufacturin g and production IS Human resource IS Finance and accounting IS
- 5. TRANSACTION PROCESSING SYSTEM A transaction is defined as an exchange between two or more business entities. Overall transaction processing, also known as data processing, reflects the principal business activities of a firm like- sales, production etc. 1. Routine and repetitive tasks 2. Records internal &external transaction 3. Batch mode or online
- 7. BUSINESS EXPERT SYSTEM Stock market trading Internal company operations 24 Hours availability of ES Consistency in decisions
- 9. MANUFACTURING AND PRODUCTION IS Production data Inventory data Supplier data Environment data Work force data
- 13. FINANCE AND ACCOUNTING INFORMATION SYSTEM INPUT- Source documents PROCESS- Double entry book keeping OUTPUT- Financial statements