Telecommunication

Telecommunication is the transmission of information over significant distances to

communicate. In earlier times, telecommunications involved the use of visual signals, such as

beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs, or audio

messages via coded drumbeats, lung-blown horns, or sent by loud whistles, for example. In the

modern age of electricity and electronics, telecommunications now also includes the use of

electrical devices such as the telegraph, telephone, and teleprinter, as well as the use of radio and

microwave communications, as well as fiber optics and their associated electronics, plus the use

of the orbiting satellites and the Internet.

http://en.wikipedia.org/wiki/Telecommunication