kosovohp
Number of posts : 339 Location : VN Member of : VN Registration date : 2010-10-01
| Subject: Telecommunication Tue Nov 02, 2010 5:11 pm | |
| Telecommunication is the transmission of messages, over significant distances, for the purpose of communication. In earlier times, telecommunications involved the use of visual signals, such as beacons, smoke, 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 telegraphs, telephones, and teletypes, 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. naples real estateTechnischer übersetzer Japanisch | |
|