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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, Joseph Moses Levy
Communication system that allows the transmission of information by means of electrical impulses and using a pre-established sign code. -
telephone, Alexander Graham Bell
Communication system that transmits voice and sound over long distances by electrical or electromagnetic means. -
radio ,Guillermo Marconi
Radio is a means of 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 delivery such as Internet radio. -
television, John Logie Baird
Television is a system for transmitting images and sound at a distance through Hertzian waves. -
tablet, Alan Kay
A tablet, in short, is a portable computer (computer) larger than a smartphone but, generally, smaller than a netbook -
mobile phone, Martin Cooper
mobile telephone, also called mobile phone, portable device for connecting to a telecommunications network in order to transmit and receive voice, video, or other.