The transfer of information is one of the main factors in the existence of any form of life on Earth. Even the simplest organisms, when born, have basic instincts that help them survive. The transmission of information from source to receiver takes place in various ways. These include
sensory organs, such as hearing, sight, touch, and various technical devices related to telecommunications.
The transmission of information takes place in the form of a message using a communication channel. The source data is encoded into a signal that is transmitted to the addressee. Received are processed by the receiver and converted into information. For example, a weather message is transmitted to the recipient (viewer) from the meteorological center via a communication channel (TV).
The quality of the received data directly depends on the method of its transmission. For example, a bad screen image 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 word of mouth can be considered the most striking example of this: the longer the information reaches the recipient, the greater the chance of receiving false information.
In the modern world, the Internet is gaining popularity as a source of information. One of the main factors of its rapid development is the ability to obtain any information practically anywhere in the world. But the transmission of information over long distances often takes place with some loss or distortion. Therefore, the communication channel is the main factor affecting the quality of the received data.
The transmission of information in computer networks at first was carried out using a landline telephone. This method had a number of disadvantages. Information transmission passed through an insecure channel, and the speed and reliability of the connection left much to be desired. The signal was processed several times, i.e. via a telephone line from the source, he entered the main center, after which he was again encoded and was sent to a special device - a modem, where he re-encoded and only then appeared on the monitor screen.
Fiber-optic information transmission systems have become a transition to a completely different level. Today FOCLs 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 provides a high degree of protection. The speed and quality of the transmission are not affected by the cross-section and
resistance of the conductor, the addressee receives the information exactly in the form in which it was sent, and the data exchange takes place almost instantly.
The rapid development of the PDA has required an increase in speed and mobile Internet. From the slow and expensive WAP connection to high-speed 4G. Progress does not stand still, and the day is not far off when the wired Internet will be absorbed by mobile. The next generation will be perplexed to look at the FOCL, just as we are now looking at landline telephony, which is gradually being replaced by wireless.