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an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.
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Communication system that allows the transmission of information by means of electrical impulses and using a pre-established code of signs.
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Communication system that transmits voice and sound over long distances by electrical or electromagnetic means.
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transmission and detection of communication signals consisting of electromagnetic waves
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System of transmission of images and sounds at a distance by means of Hertzian waves.
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A tablet is a wireless, portable personal computer with a touchscreen interface.
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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.