What Does telephone Mean
A telephone is a device that transmits sounds at a distance using electrical signals. It was invented in 1871 by Antonio Meucci , although the first to patent it was Alexander Graham Bell , in 1876 .
Generally, a telephone is made up of two circuits: a conversation circuit that handles the voice and a dial circuit , linked to dialing and calls. Both the signals that go from the telephone to the central and those that go from the central to the telephone are transmitted by the same line of just two wires. The device in charge of combining and separating both signals is the hybrid coil or hybrid transformer , which works as a power coupler.
A landline phone is connected to a central via a cable.
Internet telephony
Currently, there are telephone systems over the Internet , known as Voice over IP or VoIP (according to its acronym in English). These systems do not use conventional telephones, but rather are a series of resources that allow the acoustic signal to be sent through the Web.
The user, in this case, must have a microphone and speakers on their computer .
Landline vs. mobile phone
The non-portable device that is linked to another telephone or to a central through metallic conductors is known as a fixed telephone ; On the other hand, a cell or mobile phone is an electronic wireless device that accesses a telephone network thanks to radio waves . In short, the first is the one that until a few years ago was used in the home, with both wired and wireless models, and the second has the ability to pick up a signal from many parts of the globe, eliminating the need to keep it in one location. determined.
Today, however, this distinction is not so precise. Many telephone companies offer their users mobile phones that act as landlines ; In simple terms, the SIM they use corresponds to a cell phone number, which appears in the identifier of the person who receives a call made from said device. However, the customer is assigned another number that meets the characteristics of a fixed line; It is worth mentioning that whoever wishes to communicate with this person has the option of dialing any of the two numbers associated with the device, although they must pay different amounts in each case.
Today, a mobile phone allows you to perform multiple actions in addition to calls.
Historical evolution
The landline used to occupy a very important place in society , just a couple of decades ago. In the early 1990s, there were still many people who did not have a phone line in their homes, even in large cities. When they finally hired her, they felt privileged to enter an interconnected world, and they enjoyed making and receiving calls as if it were a divine gift.
But all of this quickly faded, and the possibility of sporting modern mobile devices far outweighed the genuine thrill of chatting with friends without actually meeting them in person. Not many could predict, of course, that such devices would be mocked a few years later, when lighter models were introduced to the market and, eventually, without the annoying and unsightly external antennas.
The broken phone game
Finally, we can mention that the broken telephone is a non-competitive children's game, which mimics the operation of a faulty telephone line by distorting the transmitted message . Basically, a minimum of three people is required to play; one of them begins by devising a phrase, which must be whispered in the ear of another, who in turn will repeat it for the next participant, and so on.
The last player must say out loud what they understood; The more information that is lost in the course of the game, the greater the fun, since a simple sentence can lead to a meaningless, hilarious one, which even embarrasses those who must share it with their companions.