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Computer, Charles Babbage
A computer is an electronic device that manipulates information, or data. -
Telegraph, Joseph Henry
The telegraph is for transmitting text messages. -
Telephone, Antonio Meucci
The telephone they work by sending signals to cell tower, using RF waves. -
Radio, Guillermo Marconi
Radio 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
It is a system for sending moving pictures and sound from one place to another. -
Tablet, Alan Kay
Is a wireless, portable personal computer with a touchscreen interface. -
Mobile phone, Martin Cooper
Is a wireless handheld device that allows users to make and receive calls.