Lecture #1 - Introduction to Information System

Lecture #1 - Introduction to Information System

• 1.
  INFORMATION SYSTEM
• 2.
  A combination of Hardware Software Infrastructure and Trained personnel organized to facilitate Planning Control Coordination and Decision Making in an organization.
• 3.
   Executive Support System (ESS)  Management Information System (MIS)  Decision Support System (DSS)  Knowledge Management System (KMS)  Transaction Processing System (TPS)  Office Automation System (OAS)
• 4.
  An Executive SupportSystem ("ESS") is designed to help senior management make strategic decisions.
• 5.
  A management information system (“MIS”) is mainly concerned with internal sources of information and summarizes it into a series of management reports.
• 6.
  Decision-support systems ("DSS")are specifically designed to help management make decisions in situations where there is uncertainty about the possible outcomes of those decisions.
• 7.
  Knowledge Management Systems("KMS") exist to help businesses create and share information.
• 8.
  Transaction Processing Systems("TPS") are designed to process routine transactions efficiently and accurately.
• 9.
  Office Automation Systemsare systems that try to improve the productivity of employee who need to process data and information.
• 10.
  Basically there are5 components available. Hardware Software Data Procedures People
• 11.
  The term hardwarerefers to machinery. This category includes the computer itself, which is often referred to as the central processing unit (CPU), and all of its support equipments.
• 12.
  The term softwarerefers to computer programs and the manuals (if any) that support them.
• 13.
  Data are factsthat are used by programs to produce useful information.
• 14.
  Procedures are thepolicies that govern the operation of a computer system.
• 15.
  People mean theend user of the Systems. Every CBIS (Computer Based Information System) needs people if it is to be useful.