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TELEGRAPH (David Alter)
The telegraph is a 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)
The telephone is a telecommunication device designed to transmit acoustic signals remotely by means of electrical signals -
TELEVISION (John Logie Baird)
The television is an electrical device that receives and reproduces these images and sounds by means of hertzian waves -
RADIO (Guglielmo Marconi)
The radio is a piece of electronic equipment used for listening to radio broadcasts -
COMPUTER (Konrad Zuse)
The computer is 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)
The tablet is a portable computer larger than a smartphone, integrated into a touch screen with which you interact primarily with your fingers without the need for a physical keyboard or mouse -
MOBILE PHONE (Martin Cooper)
The mobile phone is like a telephone but have access to a cellular radio system so it can be used over a wide area, without a physical connection to a network
