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Is 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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Communication system that transmits voice and sound over a long distance by electrical or electromagnetic means.
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Is an electrical device that receives radiotelegraphy or radiotelephone waves and transforms them into sounds or signals
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System for the transmission of images and sounds at a distance by means of Hertzian waves.
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A telephone with access to a cellular radio system so it can be used over a wide area, without a physical connection to a network.
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Is a tope of laptop, larger than a samrtphone or a PDA, integrante into a touch screen with which you interact primarily with your finges, without the need for a physical keyboard or mouse
