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Telegraph, Samuel Morse
Telegraph is any device or system that allows the transmission of information by coded signal over distance. -
Computer, Charles Babbage
Computer is a machine that can be programmed to carry out sequences of arithmetic or logical operations automatically. Modern computers can perfor -
Telephone, Alexander Graham Bell
The concept of the telephone dates back to the string telephone or lover's telephone that has been known for centuries, comprising two diaphragms connected by a taut string or wire. -
Radio, Guillermo Marconi
Radio is a means of communication that is based on the sending of audio signals through radio waves, although the term is also used for other forms of remote audio transmission such as Internet radio. -
Television, Charles Francis Jenkis
The television is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in color, and in two or three dimensions and sound. -
Mobile Phone, Martin Cooper
Mobile phone 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, Adan Kay
Tablet is a touch screen (single or multi-touch) that emits light4 and with which you interact primarily with your fingers or a stylus (passive or active), without the need for a physical keyboard or mouse.