Telephone

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  • The first phone

    Alexander Graham Bell in 1876 built the first telephone. This useful invention consists of transmitting sounds at a distance using electricity. Invention that would revolutionize the world.

  • Always connected

    The first appearance of the telephones did not have any type of dialing, that is, without numbers with which two people who wanted to speak for it had to have the two telephones connected continuously.

  • One to several

    In this year, the telephone exchanges were incorporated as a revolutionary thanks to which the telephone would no longer be directly connected to only one person and it was possible to speak to people who were connected to the same central, so to speak they spoke with the people of the same neighborhood

  • Pulse dialing

    Thanks to the creation of an automatic control panel, this type of pulse dialing telephone was created, which consisted of a wheel with 10 digits, each one corresponding to an electrical advance and the central control unit also connecting it with the given signal.

  • From pulses to tones

    In this step, you go from sending electrical signals by pulses that give the possibility of error, to a tone system whereby the probability of error is nil. It goes from digital to analog system.

  • Wireless

    On this date there was a total revolution where the phone became portable and wireless, only with the electric consumption to charge the battery.

  • Lighter and more affordable

    On this date the mobile phone entered society due to its light weight and the reduction in price considerably, although it was still within the reach of a few

  • More comfortable

    The evolution of the mobile phone continues to grow and adapt to the social needs of size and weight and to increase communication capacity and perfect hearing.

  • Present

    The smarthphone is a type of pocket computer with the capabilities of a mobile / cellular phone (eg, phone call, short message service, etc.). These devices work on a mobile computing platform, with greater capacity to store data and capable of simultaneously performing tasks, tasks performed by a computer, and with greater connectivity than a conventional telephone.