I think Romans used the abacus to calculate. https://cacm.acm.org/blogs/blog-cac... | Hacker News

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		alberto_ol on Oct 18, 2023 \| parent \| context \| favorite \| on: Using spaced repetition systems to see through a p... I think Romans used the abacus to calculate. https://cacm.acm.org/blogs/blog-cacm/234881-how-did-the-roma... https://en.wikipedia.org/wiki/Roman_abacus

mnky9800n on Oct 18, 2023 [–]

yes but they didn't use it to write down their plans.

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