The modern information world is developing very rapidly, so you just need to try to always be up to date with new technologies. This will allow you to respond to all changes in a timely manner and receive the highest quality services.
For an ordinary layman, the nature of a digital or analog signal is an uninteresting phenomenon. But when the question arises about the difference between digital and analog formats or signals, questions begin to arise. It's no secret that technologies that are based on analog principles will sooner or later end their existence and completely transfer the reins of power by transmitting information to the “digital”.
But until this moment has come, periodically there is a need to convert the analog signal to digital. It is also not uncommon when you need to do the conversion of a digital signal to analog.
An analog signal in its essence is a special signal of a data stream that can be described by certain continuous functions with respect to time. This means that the amplitude of the oscillations can have any value at certain maxima.
A digital signal is a special signal of a data stream that can be described by certain discrete functions with respect to time. That is, its amplitude can take only strictly defined values.
An analog signal is characterized by a large number of different interferences. A digital signal has the useful property of filtering out most of the possible interference. This is achieved through the ability to recover all the original data. Also, a digital signal compares favorably with the absence of redundancy in the information data stream, while analogue is characterized by the transfer of a significant amount of information that does not have a semantic load. In one physical channel, several digital signals can be transmitted, while analog only one.
A digital signal has another important characteristic - its safety. So, an analog signal is subject to almost any influences or intrusion from the external environment. At the same time, the digital one has the ability to be encrypted by assigning it a special code from a set of pulses. This excludes almost any intervention of persons who do not have rights to this in the data transfer process . The only drawback of the “numbers” is the difficulty of transmitting over long distances. But this problem is easily solved by using special devices with modulation / demodulation functions.
Switching to a digital signal is most exciting for television users. For many people, television has been and remains the only source of information. At the same time, obsolete equipment does not accept the "figure". Therefore, it is necessary to use a special device, a digital signal converter.
With it, you can convert any digital signal into the necessary analog. This avoids the additional cost of acquiring a new TV and makes it possible to use the quality of digital data transmission on your analog device.