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telecommunication |
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| navigate by keyword : team and audio beacons blown coded communicating communication communications computer course distance drumbeats early electrical electromagnetic examples fiber flags for heliographs horns included involve long loud lung means messages microwave modern networks optical optics other over pre radio satellites semaphore signal signals smoke such technologies telegraph telegraphs telephone teleprinter training transmission usually visual whistles |
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| 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, and teleprinter, networks, radio, microwave transmission, fiber optics, and communications satellites |
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Stockphotos.ro (c) 2026. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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