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Students' Guide to Information Technology, 2nd Edition
book

Students' Guide to Information Technology, 2nd Edition

by Roger Carter
May 2014
Beginner content levelBeginner
266 pages
11h 32m
English
Newnes
Content preview from Students' Guide to Information Technology, 2nd Edition
Students Guide to Information
Technology
available capacity of
the
line. Modern packet switching, based upon
digital communications equipment, allows
a
number of calls to share
the same line. In addition, optic fibres allow broadband com-
munications (i.e. signals with a very broad bandwidth), and so can
carry a very large number of simultaneous telephone calls, as well as
TV signals.
Carrier waves and modulation
Most radio and telephone communications are based on the analogue
microphone/loudspeaker technology outlined in Chapter 5, and it is
therefore important that you understand the principles behind this.
Sound waves are converted to electrica ...
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Publisher Resources

ISBN: 9781483183831