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Computer, Charles Babbage
A device, usually electronic, that processes data according to a set of instructions. The digital computer stores data in discrete units and performs arithmetical and logical operations at very high speed. -
Telegraph, Joseph Henry
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
Is a system used to send speech or data over distances using a device called a telephone that functions as the transmitter and receiver. -
Radio, Guillermo Marconi
Is sound communication by radio waves, usually through the transmission of music, news, and other types of programs from single broadcast stations to multitudes of individual listeners equipped with radio receivers. -
Television, John Logie Baird
An electronic system of transmitting transient images of fixed or moving objects together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound. -
Tablet, Alan Kay
Is a wireless, portable personal computer with a touchscreen interface. -
Mobil phone, Martin Cooper
Portable device for connecting to a telecommunications network in order to transmit and receive voice, video, or other data.