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A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically
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A communication system that transmits voice and sound over long distances by electrical or electromagnetic means.
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A means of communication based on sending audio signals via radio waves.
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System for the transmission of images and sounds at a distance by means of hertzian waves.
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Portable computer larger than a smartphone, integrated into a touch screen with which you interact primarily with your fingers without the need for a physical keyboard or mouse.
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A mobile phone, or mobile phone, is a portable phone that can make or receive calls through a radio frequency carrier.
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Communication or message transmitted by telegraph
