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Computer-Charles Babbage
An electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program. -
Telegraph-David Alter
System for transmitting messages from a distance along a wire, especially one creating signals by making and breaking an electrical connection. -
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
Telecommunication form that is carried out through radio waves or hertzian waves -
TV-John Loige Baird
System of transmission of images and sounds at a distance by means of Hertzian waves. -
Tablet-Alan Kay
Is a portable electronic device larger than a smartphone -
Mobile phone-Martin Cooper
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.