How information is transmitted

The transfer of information is one of the mainfactors of existence of any form of life on Earth. Even the simplest organisms, when they are born, possess basic instincts that help them survive. The transfer of information from the source to the receiver takes place in various ways. These include both the senses, such as hearing, sight, touch, and various technical devices related to telecommunications.

The transfer of information takes place in the form of somemessages using a communication channel. The original data is encoded into a signal that is transmitted to the addressee. Received are processed by the receiver and turned into information. For example, the weather report is transmitted to the recipient (viewer) from the meteorological center via a communication channel (TV).

The quality of the data depends onmethod of transmission. For example, a bad image on the screen can completely misinform the recipient. The effectiveness of the communication channel is also affected by the speed and number of elements involved in it. The most obvious example of this can be considered “word of mouth”: the longer the information reaches the recipient, the greater the chance of receiving false information.

In today's world, increasing popularity assource of information is gaining internet. One of the main factors of its such rapid development is the possibility of obtaining any information practically anywhere in the world. But the transmission of information over long distances often takes place with some losses or distortions. Therefore, the communication channel is the main factor influencing the quality of the received data.

The transfer of information in computer networks in the firsttime was carried out using a landline phone. This method had a number of disadvantages. The transfer of information took place on the weakly protected channel, and the speed and reliability of the connection left much to be desired. The signal was processed several times, i.e. via the telephone line from the source, he entered the main center, then was encoded again and was already sent to a special device - a modem, where he recoded again and only then appeared on the monitor screen.

Fiber-optic transmission systemsbecame the transition to a completely different level. To date, fiber optic links provide the highest speed and quality of communication. The signal is transmitted by photons that do not emit an electromagnetic field, which means that it is impossible to connect to such a channel from the outside, which ensures a high degree of security. The speed and quality of the transmission are not affected by the cross section and the resistance of the conductor, the addressee receives information exactly in the form in which it was sent, and the data exchange takes place almost instantly.

The rapid development of the CCP has required an increasespeed and mobile internet. From slow and expensive WAP connections to high-speed 4G. Progress does not stand still, and that day is not far off when the wired Internet will be absorbed by mobile. The next generation will stare at the fiber-optic cable with perplexity, just as we are now looking at a landline telephone connection, which is gradually being supplanted by wireless.