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a system for transmitting messages from a distance along a wire, especially one creating signals by making and breaking an electrical connection.
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The telephone is a telecommunication device designed to transmit acoustic signals at a distance by means of electrical signals.
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System of transmission of images and sounds at a distance by means of hertzian waves.
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Communication that is based on the sending of audio signals through radio waves
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A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data
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It is a laptop larger than a smartphone, integrated in a touch screen with which you interact primarily with your fingers without the need for a physical keyboard or mouse
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It is a portable telephone that can make or receive calls through a radio frequency carrier, while the user is moving within a telephone service area.
