Telecommunications is an activity that consists of transmitting and receiving signals. These signals can contain all kinds of information, from images or videos to documents and sounds, among others.
In other words, telecommunications have the function of sending intangible files of information almost instantaneously.
Characteristics and operation of telecommunications
The technology that groups modern telecommunications works electronically, which means that, without an electrical energy source or without an electronic process, it could not be carried out.
It should be noted that the source of energy (electricity) should not be confused with the process (electronic), since the latter is the way in which telecommunications work as a technological process. An example is the mobile phone (or cell phone), which works via electricity, but sends and receives calls and messages (among other types of information) thanks to the technology of the device.
Regarding its operation, telecommunications transmit information by means of electromagnetic waves, which work by frequencies. These frequencies can be high or low frequency, among other types.
Evolution of telecommunications
The oldest form of telecommunication consisted of interpreting smoke signals at great distances, which occurred in civilizations such as the Roman or in the Native Americans themselves.
Therefore, it was not until the appearance of advances at the electrical level that modern telecommunications finally evolved. Due to the aforementioned advance, telecommunications progressed as the electrical system improved.
It went from the telegraph at the beginning of the 19th century to the telephone at the end of the same century. Later, in the middle of the 20th century, radiocommunication emerged, key in world wars, to finally give way to the development of the technological advance that is marking the first part of the 21st century: the Internet.
Examples of devices that use telecommunication
Some examples of the use that is given to the technology that includes telecommunications are:
Each example uses a type of frequency or way of sending and receiving data, in which, as explained, they can contain video, sound, multimedia of any type and documents, respectively.