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Telegraph Samuel Morse
Telegraphy is the long-distance transmission of written messages without the physical transport of letters, .It worked by transmitting electrical signals over a wire laid between stations. Originally over cables. -
Telephone Antonio Meucci
The telephone is a telecommunication device created to transmit acoustic signals at a distance by means of electrical signals. -
Radio Nikola Tesla
The radio is a way to send electromagnetic signals over a long distance, to deliver information from one place to another. Especially those carrying sound messages. -
Television John Logie Baird
The television is a telecommunication medium used for transmitting moving images in monochrome , or in color, and in two or three dimensions and sound. Chiefly used to broadcast programs for entertainment, information, and education. -
Computer John Prester Eckert
A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. You can used to type documents, presentations,...... ( ENIAC) And it was one of the first general-purpose computers. It was capable of reprogramming itself to solve a wide class of number problems. -
Tablet Alan Kay
It is a portable electronic device larger than a smartphone, it is a single piece that integrates a touch screen that emits light and with which you interact primarily with your fingers without the need for a physical keyboard or mouse. And detailed a personal computing device for children that functioned similarly to a personal computer. -
Mobile Phone Martin Cooper
A mobile phone is a wireless handheld device that allows users to make and receive calls. And through a radio frequency carrier, while the user moves within a telephone service area.