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Boosted by jwz:
SnoopJ@hachyderm.io wrote:

You have been visited by the ARITHMETIC HAND GRENADE

Share for 2.718 years of good additions 🙏

📸 https://en.wikipedia.org/wiki/Curta

Photo: A Curta Type II mechanical computer on display at the National Museum of Computing, Bletchley Park It looks a bit like a pepper grinder with mechanical settings all around the body to set individual decimal digits, and a crank up top to advance the mechanical computation.