Uploaded August 2024 | Updated September 2026, 1 week ago

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The strange binary-like number system invented for Napier's location arithmetic, as described in his "Rabdology" (Rabdologia), published 1617. It's like binary, but worse!

This is episode 81 of my video series about old calculating methods.

Video about Napier's multiplication board: youtu.be/tVoMdddBQ5k

End song inspired by "Hotter than a Molotov" by The Coup. youtu.be/X8AW7PmsxAY

Chris Staecker webpage with location board free PDF download: https://faculty.fairfield.edu/cstaecker/machines/locationarithmetic.html

#badge