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Telegraph-Samuel Morse
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
A system for transmitting speech or computerized information over distances, usually by converting sounds into electric impulses that are sent through a network of wires and cables: some systems transmit by means of radio waves. -
Radio-Marconi
Radio is the technology of signaling and communicating using radio waves. -
Television-John Logie Baird
A device shaped like a box with a screen that receives electrical signals and changes them into moving images and sound -
Computer-German Konrad Zuse
A computer is a machine or device that performs processes, calculations and operations based on instructions provided by a software or hardware program. It has the ability to accept data (input), process it, and then produce outputs. -
Mobile phone-Martin Cooper
Is a small portable radio telephone. The mobile phone can be used to communicate over long distances without wires. It works by communicating with a nearby base station. -
Tablet-Bill Gates
Is a portable computer that uses a touchscreen as its primary input device. Most tablets are slightly smaller and weigh less than the average laptop.
