Image of IBM2741 Oscar.nierstrasz, CC BY-SA 4.0 , via Wikimedia Commons

1971 – First Instant Messaging

First “instant messaging” at the Geneseo College from IBM 2741 terminals connected to an IBM 360/67 computer at SUNY Binghamton.

Image of  IBM 2741 Credit:
https://commons.wikimedia.org/wiki/File:IBM2741.JPG
Oscar.nierstrasz, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons