In 1889 – Almon B. Strowger of Kansas City filed his patent for the first automatic telephone exchange.
In 1923 – Inventor Lee De Forest demonstrated the Phonofilm for the press. It was the first motion picture with a sound-on-film track.
In 1989 – Tim Berners-Lee wrote a paper proposing an “information management” system that became the foundation of the World Wide Web. He called it the Mesh at the time.
Like Tech History? Get the illustrated Year in Tech History at Merritt’s Books site.