May 2014
Beginner
266 pages
11h 32m
English
Content preview from Students' Guide to Information Technology, 2nd Edition
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Communications
How do electromagnetic communications work?
The communications process involves three stages:
1 the conversion of information, i.e. data, text, image, or voice, to
electromagnetic signals
2 the transmission of these signals to a receiving device
3 the conversion of the signals back to information (data, text, image,
or voice).
The equipment used for these three stages for each type of
communications is as follows.
Local communications
All that is needed in this case is suitable cabling connecting up the
computers and other equipment that are to communicate, and
communications software to pass files between them.
Radio and TV
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.