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Material similar to thick paper that was used in ancient times as a writing surface
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Thin material produced by pressing together moist fibres of cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets. (Used For Writing)
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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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Telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly
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Mechanical or electromechanical machine for writing characters similar to those produced by printer's movable type.
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Transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages.
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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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System for transmitting visual images and sound that are reproduced on screens, chiefly used to broadcast programs for entertainment, information, and education.
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Global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
