-
Telegraph - Samuel Morse
System for transmitting messages from a distance along a wire, especially one creating signals by making and breaking an electrical connection. -
Telephone - Graham Bell
System for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals. -
Television - John Logie Bard
System for converting visual images into electrical signals, transmitting them by radio or other means, and displaying them electronically on a screen. -
Radio - Guillermo Marconi
The transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages. -
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
Mobile computing device designed to be held in one or two hands. However, today all tablets use a touch screen as their primary input device with the option to connect external devices, such as a keyboard. -
Mobile Phone -
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.
