Gosh, I remember using those.
I also remember using a teletype to receive emails for a CEO at Westinghouse who was important enough to have emails addressed to him.
I’m typing this on a device the size of a paperback book, which has no exterior keyboard.
How times have changed.
I remember my parents’ retired friends spending the day at the local stock market, watching the agents post the current prices up on a chalkboard and then changing them as new information came in.