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单词 Datacommunications
释义

Datacommunications

中文百科

电信 Telecommunication

(重定向自Datacommunications)
在德国巴伐利亚的最大卫星通信设施的抛物面天线
摩尔斯电报机

电信又称电讯英语:Telecommunication),是用电磁设备实现的利用有线电、无线电或光传输信息的通信方式。电信起源于19世纪发明的有线电报和有线电话,20世纪无线电的发明以及电子管、晶体管和集成电路的出现和发展把电信带入了全新的发展时期,无线电报、广播、电视、卫星通信、数据通信、光纤通信、因特网等技术的应用使人类社会开始发生深刻的变化。

英语百科

Telecommunication 电信

(重定向自Datacommunications)
 Earth station at the satellite communication facility in Raisting, Bavaria, Germany
Visualization from the Opte Project of the various routes through a portion of the Internet
A replica of one of Chappe's semaphore towers
Optical fiber provides cheaper bandwidth for long distance communication.

Telecommunication is – according to Article 1.3 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as "Any transmission, emission or reception of signs, signals, writings, images and sounds or intelligence of any nature by wire, radio, optical or other electromagnetic systems." This definition is also identical to that contained in the Annex to the Constitution and Convention of the International Telecommunication Union (Geneva, 1992).

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更新时间:2025/6/21 17:20:05