What event you are counting from? The term "internet" was first used in 1974 (https://datatracker.ietf.org/doc/html/rfc675 https://datatracker.ietf.org/doc/html

What event you are counting from? The term "internet" was first used in 1974 (https://datatracker.ietf.org/doc/html/rfc675 https://datatracker.ietf.org/doc/html/rfc675) AFAIK, but the technology has been in development since 1960s.