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Telegraph
A telegraph is a machine used to transmit encoded information using electrical signals. It was invented by Samuel Morse. He started working on it in 1832 and but didn't build it until 1843. -
Computer
A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming. The first computer resembling today's modern machines was the Analytical Engine, a device conceived and designed by British mathematician Charles Babbage between 1833 and 1871. -
Telephone
A telephone is a non-portable telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. Alexander Graham Bell was its main inventor. -
Radio
The radio is a device which either makes, or responds to, radio waves. Nikola Tesla is considered by many to be the true inventor of the radio, although it was Guglielmo Marconi who filed the patent in 1904. -
Television
The television is an electronic device for the reception and reproduction of television signals. John Logie Baird was the inventor of mechanical television, but it was Philo Taylor Farnsworth who invented the first completely electrical television. -
Mobile phone
Martin Cooper was the inventor of the mobile phone, which 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. -
Tablet
A tablet is a mobile device, typically with a mobile operating system and touchscreen display processing circuitry, and a rechargeable battery in a single, thin and flat package. The first invention similar to the tablet was the Dynabook (1968) but the company that invented the tablet as we know it today is Microsoft (Bill Gates)
