Alexander Graham Bell was born on March 3, 1847 in Edinburgh (Scotland).One day he came to the idea of creating a device by means of which "would be possible to transmit different sounds, if I can cause fluctuations of the current corresponding to the fluctuations in the density of the air, which produces this sound." In parallel, Bell worked on the problem of simultaneous transmission of several telegraph messages on one wire, and pure chance to experiment with them to set up a "musical telegraph" helped him discover a phenomenon that led to the invention of the telephone.February 14, 1876 Bell and simultaneously with the inventor, I.Grey filed a patent application on the invention of the telephone. The patent was issued to Bell March 7, 1876, but only in 1893, after many trials the US Supreme Court allowed the priority dispute in his favor.Among other inventions Bell - improvement of Edison's phonograph, the use of flexible aileron with rigid bearing surface for the flight control of the aircraft. Bell has published more than 100 articles and received 30 patents.He was awarded the A. Volta, established by Napoleon, and in 1877 was awarded the Legion of Honor. Bell died near Baddeck August 2, 1922.