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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 Henry
A telegraph is a communication system that sends information by making and breaking an electrical connection. -
Telephone, Antonio Meucci
The telephone is the electrical system of communication that you use to talk directly to someone else in a different place. -
Radio, Guillermo Marconi
The transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages. -
Television, John Logie Baird
Is an electronic device used to receive sound and images which create television programs that people watch. -
Mobile phone, W.Rae Young
A mobile phone is a wireless handheld device that allows users to make and receive calls. -
Tablet, Alan Kay
A flat slab of stone, clay, or wood, used especially for an inscription.