Computers, Information Technology
How information is transmitted
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 destination. The received ones are processed by the receiver and converted into information. For example, the weather report is transmitted to the recipient (the viewer) from the meteorological center using a communication channel (TV).
The quality of the data obtained directly depends on the mode of transmission. For example, a bad image on the screen is capable of completely misleading the recipient. The efficiency of the communication channel is also affected by the speed and the number of elements involved in it. The most striking example of this is "word of mouth": the longer the information reaches the recipient, the greater the chance of obtaining false information.
The transfer of information in computer networks at first was carried out using a landline phone. This method has a number of shortcomings. The transfer of information passed through a weakly protected channel, and the speed and reliability of the connection left much to be desired. The signal was processed several times, i.e. On the phone line from the source, he went to the main center, then was again encoded and already sent to a special device - a modem, where he was recoded and only then appeared on the screen of the monitor.
The rapid development of the CCP required an increase in the speed and mobile Internet. From slow and expensive WAP-connection to high-speed 4G. Progress does not stand still, and it's not far off that day when the wired Internet will be absorbed by the mobile. The next generation will look with perplexity at the fiber-optic line, just as we are now looking at fixed-line telephony, which is gradually being replaced by wireless.
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