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telecommunication
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telecommunication Article

telecommunication summary

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Below is the article summary. For the full article, see telecommunication.

telecommunication, Communication between parties at a distance from one another. Modern telecommunication systems—capable of transmitting telephone, fax, data, radio, or television signals—can transmit large volumes of information over long distances. Digital transmission is employed in order to achieve high reliability with minimal noise, or interference, and because it can transmit any signal type, digital or analog. For digital transmission, analog signals must be subjected to a process of analog-to-digital conversion; most television, radio, and voice communications are analog and must be digitized before transmission. Transmission may occur over cables, wireless radio relay systems, or via satellite links.

Light-emitting diodes have largely replaced older lighting technologies, such as incandescent bulbs
LED Summary
LED, in electronics, a semiconductor device that emits infrared or visible light when charged with an electric current. LED displays began to be used for consumer electronic devices starting in 1968, when Hewlett-Packard (HP) introduced the first LED display. Visible LED lights are used in many
NEC Corporation
NEC Corporation Summary
NEC Corporation, major Japanese multinational corporation, producer of telecommunications equipment and related software and services. Headquarters are in Tokyo. Nippon Electric Company, Ltd. (NEC; officially NEC Corporation in 1983), was founded in 1899 with funding from the Western Electric
AT&T Corporation Summary
AT&T (T) is a Dallas-based holding company that comprises telecommunications and technology subsidiaries and affiliates; its history dates back to 1876 and Alexander Graham Bell’s invention of the telephone. The company, long referred to as “Ma Bell,” swelled to great corporate heights as it built
e-commerce Summary
E-commerce, maintaining relationships and conducting business transactions that include selling information, services, and goods by means of computer telecommunications networks. Although in the vernacular e-commerce usually refers only to the trading of goods and services over the Internet,