a) Ray Tomlinson

Ray Tomlinson, an American computer programmer, introduced email in 1971, marking a milestone in digital communication. Working on the ARPANET, the precursor to the Internet, Tomlinson developed the first system capable of sending messages between users on different computers. He also introduced the use of the “@” symbol to separate the user’s name from their computer’s name. Email revolutionized communication, allowing fast and efficient exchange of information over long distances. Tomlinson’s invention has had a lasting impact on personal and business communication, laying the foundation for the digital communication networks we use today.