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Computer Charles Baggage
an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program. -
Telegraph Samuel Morse
is an apparatus or device that uses electrical signals to transmit encrypted text messages. -
Telephone Alexander Graham Bell
A telephone is an instrument designed for the simultaneous transmission and reception of the human voice. -
Radio Guglielmo Marconi
communication that is based on the sending of audio signals through radio waves, although the term is also used for other forms of remote audio transmission such as Internet radio. -
Television John Logie Baird
is a system for the transmission and reception of images and sounds at a distance that simulate movements, which uses a diffusion mechanism -
Tablet Alan Kay
It is a portable electronic device larger than a smartphone or a PDA, it is a single piece that integrates a touch screen (simple or multi-touch) that emits light and with which it interacts primarily with the fingers or a stylus (passive or active), no need for physical keyboard or mouse -
Mobile Phone Martin Cooper
is a portable device that can make or receive calls through a radio frequency carrier, while the user is moving within a telephone service area