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Apparatus or device that uses electrical signals to transmit encrypted text messages -
Antonio Meucci created the telephone referred to as a device that transmitted sounds through a wire through electrical signals. -
Italian physicist Guillermo Marconi invented radio, connecting Europe and America for the first time by means of a radiotelegraphic signal. -
Philo Taylor Farnsworth created television, it is a system for the transmission and reception of images and sounds at a distance that simulate movements, which uses a diffusion mechanism. -
Charles Babbage created the computer in 1941. -
It was the American engineer Alan Kay who first proposed something very similar to a tablet in 1968. -
A mobile phonesometimes shortened to simply mobile, cell or just phone, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.