An information system is a group of interacting components that collect, organize, store, and communicate data to produce useful information. The key components are data, hardware, software, people, and procedures. There are several types of information systems including management information systems, transaction processing systems, decision support systems, executive information systems, and expert systems/artificial intelligence systems.

1. Greetings to you all

2. Concept , component and Types of
information system

3. Concept of Information System
What is an information system ?
• A group of components that interact to produce information.
• Organized system for collection , organization, storage and
communication of information
• A complementary network that people and organizations
use to collect , filter , process , create and distribute data .

4. Components
• 1) Data
o Data are facts that are used by programs to produce useful information
oStored in machine readable form on disk or tape
• 2) Hardware
o refers to machinery
o often refers to as CPU and all of its support equipment
• 3) Software
oComputer programs and the manuals that support them
o2 types – system software and application software

5. Components
• 4) People
o needs people if it is to be useful
o often the most over looked element
o probably the most infulencial in success or failure of system
• 5) Procedure
oPolicies that govern the operation of computer system
oCan be in the form of guidelines in user manuals

6. Inter-relation

7. Types
• 1) Management Information System
o concerned with internal sources of information
o used by middle management and operational reports
• 2) Transaction processing system
o designed to process routine transactions efficiently and accurately
o a business will have several TPS
• 3) Decision support system
o help management to make decisions
o gather relevant information , analyze options and alternatives .

8. Types
• 4) Executive information system
o designed to help senior management
o Gathers , analyses and summarizes info used in business
• 5) Expart system / Artificial intelligence
o designed to solve complex problems by reasoning about
knowledge like an expart
o emulates the decision making ability of a human expart