The IBM 3101 is a fancy computer gizmo from a long time ago. It was used to let people talk to a computer, just like you might talk to Siri or Alexa today. But back then, computers weren't as smart, and they didn't have screens that showed pictures or videos. Instead, they used the IBM 3101 to show words and numbers on a little screen that looked kinda like a calculator.
The IBM 3101 was really special because it could connect to different kinds of computers, even ones that were made by other companies! So if you worked in an office and you had a bunch of different computers, you could use the IBM 3101 to talk to all of them without having to learn how to use each one.
Overall, the IBM 3101 was like a magic talking box that helped people use different computers all at once!