Difference between revisions of "Telecommunication"
Karl Jones (Talk | contribs) (→See also) |
Karl Jones (Talk | contribs) (→See also) |
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* [[Free-space optical communication]] | * [[Free-space optical communication]] | ||
* [[Information theory]] | * [[Information theory]] | ||
| + | * [[Radio]] | ||
| + | * [[Wi-Fi]] | ||
| + | * [[Wireless]] | ||
== External Link s== | == External Link s== | ||
* [http://en.wikipedia.org/wiki/Telecommunication Telecommunication] @ Wikipedia | * [http://en.wikipedia.org/wiki/Telecommunication Telecommunication] @ Wikipedia | ||
Revision as of 08:04, 17 February 2016
Telecommunication is exchange of information between two entities using machines.
Description
Communication technology uses channels to transmit information (as electrical signals), either over a physical medium (such as signal cables), or in the form of electromagnetic waves.
The word is often used in its plural form -- telecommunications -- because it involves many different technologies.
History
Early means of communicating over a distance included visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs.
Other examples of pre-modern long-distance communication included audio messages such as coded drumbeats, lung-blown horns, and loud whistles.
Modern technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as:
- Telegraph
- Telephone
- Teleprinter
- Computer networks
- Radio
- Microwave transmission
- Fiber optics
- Communications satellites
See also
- Computer network
- Electricity
- Entropy
- Free-space optical communication
- Information theory
- Radio
- Wi-Fi
- Wireless
External Link s
- Telecommunication @ Wikipedia
