telecommunications
Sign in to savethumb|upright=1.4|Earth station at the satellite communication facility [[Raisting Earth Station in Raisting, Bavaria, Germany]]
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Telecommunications is the technology and practice of transmitting information over distance through systems like satellites, as shown in this Earth station facility. It matters because it enables people and organizations to communicate and share information across vast distances, forming the backbone of modern global connectivity.
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Article
31 sectionsContents
- Definition
- History
- Before the electrical and electronic era
- Telegraph and telephone
- Radio and television
- Vacuum tubes
- Computer networks and the Internet
- Growth of transmission capacity
- Technical concepts
- Basic elements
- Analogue versus digital communications
- Communication channels
- Modulation
- Telecommunication networks
- Societal impact
- Microeconomics
- Macroeconomics
- Social impact
- Entertainment, news, and advertising
- Regulation
- Modern media
- Worldwide equipment sales
- Telephone
- Radio and television
- Internet
- Local area networks and wide area networks
- See also
- References
- Citations
- Bibliography
- External links
thumb|upright=1.4|Earth station at the satellite communication facility [[Raisting Earth Station in Raisting, Bavaria, Germany]]
Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electrical or electronic means, typically through cables, radio waves, or other communication technologies. These means of transmission may be divided into communication channels for multiplexing, allowing for a single medium to transmit several concurrent communication sessions. Long-distance technologies invented during the 19th, 20th and 21st centuries generally use electric power, and include the electrical telegraph, telephone, television, and radio.