Author by Dr Umer Ijaz
The Series in Communication Technology and Society is an integrated series centering on the social aspects of communication technology. Written by outstanding communications specialists, it is designed to provide a much-needed interdisciplinary approach to the study of this rapidly changing field.
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First chapter:
Objectives
After completing this chapter, you will be able to:
■ Explain the functions of the three main parts of an electronic communication system.
■ Describe the system used to classify diferent types of electroniccommunication and list examples of each type.
■ Discuss the role of modulation and multiplexing in facilitating signal
transmission.
■ Define the electromagnetic spectrum and explain why the nature of
electronic communication makes it necessary to regulate the electromagnetic spectrum.
■ Explain the relationship between frequency range and bandwidth
and give the frequency ranges for spectrum uses ranging from voice
to ultra-high-frequency television.
■ List the major branches of the field of electronic communication and
describe the qualifications necessary for diferent jobs.
■ State the benefit of licensing and certifi cation and name at least
three sources.
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