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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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A system for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals.
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is the technology of signaling and communicating using radio waves.
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a system for converting visual images (with sound) into electrical signals, transmitting them by radio or other means, and displaying them electronically on a screen.
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A machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.
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Portable computer that uses a touchscreen as its primary input device. Most tablets are slightly smaller and weigh less than the average laptop.
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Is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.
