Page 71 - DLIS408_INFORMATION_TECHNOLOGY-APPLICATIONSL SCIENCES

Information Technology and Application Reena Kapoor, Lovely Professional University

Notes
Unit 6: Information and Communications Technology

CONTENTS
Objectives
Introduction
6.1 ICT in Society
6.2 Fundamentals of Communication
6.3 Meaning of Communication
6.4 Importance of Communication
6.5 Fundamentals of Communication Media
6.5.1 Two Wire Open Lines
6.5.2 Twisted-pair Cable
6.5.3 Coaxial Cable
6.5.4 Fiber Optic Cable
6.6 Wireless Communication
6.6.1 Radio Waves
6.6.2 Microwave Towers
6.6.3 Infrared Waves
6.7 Summary
6.8 Keywords
6.9 Review Questions
6.10 Further Readings

Objectives

After studying this unit, you will be able to:
Discuss ICT in Society
Describe the fundamentals of Communication
Define meaning of Communication.
Explain the importance of communication.
State about the fundamentals of communication media.

Introduction
Information and communications technology is usually called ICT. It is often used as an extended
synonym for information technology (IT), but is usually a more general term that stresses the role
of unified communications and the integration of telecommunications (telephone lines and wireless
signals), intelligent building management systems and audio-visual systems in modern information
technology. ICT consists of all technical means used to handle information and aid communication,
including computer and network hardware, communication middleware as well as necessary
software. In other words, ICT consists of IT as well as telephone, broadcast media, all types of
audio and video processing and transmission and network-based control and monitoring functions.
The expression was first used in 1997 in a report by Dennis Stevenson to the UK government and
promoted by the new National Curriculum documents for the UK in 2000.
ICT is often used in the context of “ICT roadmap” to indicate the path that an organization will
take with their ICT needs.

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