Difference between revisions of "Telecommunication"
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Modern technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as: | Modern technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as: | ||
| − | * Telegraph | + | * [[Telegraph]] |
| − | * Telephone | + | * [[Telephone]] |
| − | * Teleprinter | + | * [[Teleprinter]] |
* [[Computer network|Computer networks]] | * [[Computer network|Computer networks]] | ||
| − | * Radio | + | * [[Radio]] |
| − | * Microwave transmission | + | * [[Microwave transmission]] |
| − | * Fiber optics | + | * [[Fiber optics]] |
| − | * Communications satellites | + | * [[Communications satellites]] |
== See also == | == See also == | ||
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[[Category:Engineering]] | [[Category:Engineering]] | ||
[[Category:Telecommunications]] | [[Category:Telecommunications]] | ||
| + | [[Category:Telephony]] | ||
Revision as of 15:22, 7 May 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
