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Telegraph
Samuel Morse.Telegraph, any device or system that allows the transmission of information by coded signal over distance. -
Telephone
Alexander Graham Bell. System for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals. -
Radio
Guglielmo Marconi. Is a way to send electromagnetic signals over a long distance, to deliver information from one place to another. -
Television
Philo Taylor Farnsworth II.An electronic system of transmitting transient images of fixed or moving objects together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound -
Computer
Konrad Zuse. An electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program -
Tablet
Alan Kay. A tablet, or tablet PC, is a portable computer that uses a touchscreen as its primary input device. -
Mobil phone
Martin Cooper.A mobil phone with access to a cellular radio system so it can be used over a wide area, without a physical connection to a network.
