Difference between revisions of "Telecommunication"
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* [[Bandwidth (computing)]] | * [[Bandwidth (computing)]] | ||
| + | * [[Checksum]] | ||
| + | * [[Communication]] | ||
* [[Computer network]] | * [[Computer network]] | ||
| + | * [[Data transmission]] | ||
* [[Electricity]] | * [[Electricity]] | ||
* [[Entropy]] | * [[Entropy]] | ||
| + | * [[Error detection and correction]] | ||
* [[Free-space optical communication]] | * [[Free-space optical communication]] | ||
* [[Information theory]] | * [[Information theory]] | ||
Revision as of 08:21, 21 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
- Bandwidth (computing)
- Checksum
- Communication
- Computer network
- Data transmission
- Electricity
- Entropy
- Error detection and correction
- Free-space optical communication
- Information theory
- Near field communication
- Radio
- Wi-Fi
- Wireless
External Link s
- Telecommunication @ Wikipedia
