Alexander Graham Bell was a Scottish-born inventor and scientist who is best known for inventing the first practical telephone in 1876. Born in 1847 in Edinburgh, he was also a teacher of the deaf and developed techniques for speech reading and helping the hearing impaired communicate. Bell made significant contributions in the fields of telecommunications, aviation, and medicine. His work paved the way for the modern telecommunications industry. Bell passed away in 1922, leaving behind a legacy of innovation and discovery.