Telecom

Definition of telecommunications: Generally any exchange of information on a certain distance away is known as telecommunications. Each transmission and reception of all signals, signs, images, characters or sounds that term as an umbrella. The corresponding German word is "telecommunications". It is since the 1990s, however, used only in emergency and military installations. Today the word telecommunications in connection with the exchange of data using wireless technology, electrical engineering, electronics and other transmission technologies will be used. Television, radio, Internet, mobile telephony and facsimile are therefore currently the most important telecommunications species. But as the people came early to exchange data with each other? Earlier ways of telecommunications Previously we used to, inter alia, telegraph exchange. Even in ancient Greece they used optical telegraphy using torches and mirrors. By the telegraph could transmit different forms of texts on a further distance away. With writing, the telegraph, for example, letters to be sent the message transmitted over a code. Unlike as in today's phone, you could transfer the data simultaneously in one direction only. The development of the phone began in 1861, when it became the German physicist Johann Philip Reis with vibrations caused by talking on a diaphragm to close an electrical circuit to open and transferred to a same apparatus. Alexander Graham Bell constructed in 1877 then the first electromagnetic telephone, which had the forward spoken in almost original sound quality. For the construction of telephone connections, the hand placement by the so-called "young lady was used by the Office." The invention of the telephone brought a better quality of life with him and is still one of the most important means of communication.

Operation of telecommunications

The Internet is today almost no longer a foreign word. It has become a common and indispensable means of telecommunication. It consists of networks of different management, which are interconnected. The network consists mainly of fiber optic cables that are connected to a network. There are so used glass fibers, because they have a very large transmission capacity. Well known, the phone one of the most important means of communication in society has become. The apparatus, to the implementation of sound into electrical signals and components for controlling the connection is one of the three basic components. The other two are the telephone switching system and the transmission channel. The sound through a microphone is converted into electrical signals and the receiver re-issued as a sound wave.

Further informations in german can be found here!