INTRODUCTION TO IT

1. AN INTRODUCTION TO INFORMATION
SYSTEMS
Chapter 1

2. Information System
 An information system (IS) is typically considered to be a set of interrelated
elements or components that collect (input), manipulate (processes), and
disseminate (output) data and information and provide a feedback mechanism to
meet an objective. OR
 a set of interrelated components working together to collect, retrieve, process,
store, and distribute information for the purpose of facilitating planning, control,
coordination, analysis, and decision making in business organizations
 Examples: ATMs; airline reservation systems; course reservation systems

3. Definitions
• Data
• Collection of raw facts and figures is called data.
• Raw facts such as an employee’s name and number of hours worked in a
week, inventory part numbers or sales orders.
• Information
• The processed form of data is called information.
• A collection of facts organized in such a way that they have additional
value beyond the value of the facts themselves.

4. Definitions
• Knowledge
• An awareness or understanding of a set of
information and ways that information can be
made useful to support a specific task or reach
a decision.

5. The Process of Transforming Data into
Information