New ask Hacker News story: Ask HN: What did "computer geek" type people do before computers were invented?

Ask HN: What did "computer geek" type people do before computers were invented?
12 by superconduct123 | 8 comments on Hacker News.
As in the type of people who become computer/programming geeks What did those type of people "nerd out on" as a hobby before computers were invented/accessible?