-
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 - Antonio Meucci
A system for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals. -
radio - Guillermo Marconi
is the technology of signaling and communicating using radio waves. -
television - John Logie Baird
a system for converting visual images (with sound) into electrical signals, transmitting them by radio or other means, and displaying them electronically on a screen. -
computer - Konrad Zuse
A machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming. -
tablet - Alan Kay
Portable computer that uses a touchscreen as its primary input device. Most tablets are slightly smaller and weigh less than the average laptop. -
mobile phone - Martin Cooper
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.
