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Comunication system that transmits voice and sound over long distances by electrical or electromagnetic.
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The telegraph is a device that uses electrical signats to transmit coded text messages, such as Morse code, trough wire lines or radio communications.
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It is a form of public telecomunication, represented by emission, transport and reception of voices, music and sound effects by means of electromagnetic waves that without cables and connections, travel from a centrally located source (station) to the listener (receiver)
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Television is a system for transmitting images and sound al a distance through Hertz waves.
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A computer, also know as a computer, is an electronic machine that receives and processes data with the mission of transforming it into useful information.
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It is a laptop larger than a smartphone, integrated into a touch screen with which you interact primarilly whit your fingers without the need for a physical keyboard or mouse.
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A mobile is something that is mobile or that is not fixed or still.
The operation of this type of telephone is given by radio waves that allow it to access the antennas that make up the mobile telephone network.
