Article:
Communication gadget:
Communication
devices have been around in one form or another since early in humanity's
existence. Even in primitive times before history, people were using methods to
communicate with each other. In more modern times, communication devices come
in several different formats, and use different styles of communication, as
well, to get a message across. Several types of devices are frequently used for
communicating
The idea of a
communication device is broad, as almost any object can be used for
communication. For our purposes, a communication device is anything that can be
used to convey a message from one person to another. There have been many such
devices over the course of human history.
Even before the
written word, drums, fires, and smoke signals were used to relay warnings and
other messages across long distances. Later, handwritten notes were sent by
courier or via horseback, in a manner similar to a postal service. And in the
Middle Ages, the invention of the printing press enabled books and later
newspapers to be produced on a mass-market basis, and so they too became
effective communication devices
As the end of the second millennium A.D. approached, major
new technologies began to appear. One of the biggest innovations of the 19th
century was the telegraph. Later, Alexander Graham Bell would create the first
working telephone.
In the early 1900s, researchers
discovered how to use the radio waves that pervaded the planet. They eventually
learned how to broadcast using these radio waves, so that audio could be
delivered directly into people's homes. In the 1950s, television was invented,
and in addition to audio broadcasts, people could now view actual visual
broadcasts of people and places.
Personal computers first became truly
popular in the early 1980s. Not long after that, computers began to be
networked with each other, and in the 1990s, the Internet as we know it today
was effectively born. The Internet arguably ranks
among the greatest inventions ever
made, as it has made communication relatively instant even for people on
opposite sides of the planet, and has provided access to even remote parts of
the Earth.
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