telegraph systems
Wired message infrastructure
Telegraph systems are networks for transmitting messages over distance using electrical signals through wires.
Developed in the mid-nineteenth century, they revolutionized long-distance communication before telephones.
The term now appears mainly in historical contexts or metaphorically: The old telegraph system connected remote outposts to civilization.
To telegraph something is to signal intentions obviously, from how telegraph operators could anticipate messages.
- relay stationSignal-boosting transmission point
- Morse codeDot-dash signaling system
- dots and dashesTelegraph signal components
- duplex communicationSimultaneous two-way data flow
- Samuel MorseTelegraph pioneer, code creator
dead letter office · encoding · galvanometer · insulator · message relay · wire service · news flash · copper wire · transatlantic cable · sounder · Western Union · telegrapher · economic globalization · ticker tape · heliograph · decoding · decoding · decoding
telegraph systemssatellite communication
Transmission via orbiting relay
5G networks · digital communication · broadband · instant messaging · internet
telegraph systemswireless communication
Sending data without cables
radio transmission · satellite transmission · cellular networks · Wi-Fi · Bluetooth
telegraph systemsvideo conferencing
Real-time audiovisual communication online
live streaming · real-time communication · telephone calls · voice calls · VoIP
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