In earlier times,
telecommunications involved
the use of visual signals, such
as beacons,
smoke, semaphore
telegraphs, signal flags, and
optical heliographs, or audio
messages such as
coded drumbeats, lungblown horns, and loud
whistles.
In modern times,...
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In earlier times,
telecommunications involved
the use of visual signals, such
as beacons,
smoke, semaphore
telegraphs, signal flags, and
optical heliographs, or audio
messages such as
coded drumbeats, lungblown horns, and loud
whistles.
In modern times,
telecommunications involves
the use of electrical devices
such as
the telegraph, telephone,
and teleprinter, as well as
the use of radio, microwave
transmission towers, optics,
orbiting and the Internet,
which is a vast world-wide
computer network.
A revolution in wireless
telecommunications began
in the first decade of the
1900s with pioneering
developments
in radio communications by
Nikola Tesla and Guglielmo
Marconi.
Marconi won
the Nobel Prize in Physics in
1909 for his efforts.
Other
highly notable pioneering
inventors and developers in
the field of electrical and
electronic
telecommunications
include Charles
Wheatstone and Samuel
Morse (telegraph), Alexander
Graham
Bell (telephone), Edwin
Armstrong, and Lee de
Forest (radio),
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