Chapter 2

WHAT IS AN INFORMATION SYSTEM?

An information system (IS) is a set of interrelated elements or components that collect (input), manipulate (process), store, and disseminate (output) data and information, and provide a corrective reaction (feedback mechanism) to meet an objective.

***Ralph M. Stair & George W. Reynolds.(2010).Principles of Information Systems A Managerial Approach Ninth Edition.Course Technology, Cengage Learning.USA

What is Input?

The activity of gathering and capturing raw data

***Ralph M. Stair & George W. Reynolds.(2010).Principles of Information Systems A Managerial Approach Ninth Edition.Course Technology, Cengage Learning.USA

What is Processing?

Converting or transforming data into useful outputs.

***Ralph M. Stair & George W. Reynolds.(2010).Principles of Information Systems A Managerial Approach Ninth Edition.Course Technology, Cengage Learning.USA

What is an Output?

Production of useful information,usually in the form of documents and reports.

***Ralph M. Stair & George W. Reynolds.(2010).Principles of Information Systems A Managerial Approach Ninth Edition.Course Technology, Cengage Learning.USA

What is Feedback?

Output that is used to make changes to input or processing activities.

***Ralph M. Stair & George W. Reynolds.(2010).Principles of Information Systems A Managerial Approach Ninth Edition.Course Technology, Cengage Learning.USA

Computer Based InformationSystem (CBIS)

A single set of hardware, software,databases, telecommunications, people, and procedures that are configured to collect, manipulate, store, and process data into information.

***Ralph M. Stair & George W. Reynolds.(2010).Principles of Information Systems A Managerial Approach Ninth Edition.Course Technology, Cengage Learning.USA

Task