Well, if we going retro, I theorize it is the following that they used since new thinking in Roman historiography suggests the Romans had contact with Asian markets. Jim [image: Screen Shot 2013-08-04 at 10.40.00 AM.png] On Wed, Feb 20, 2019 at 3:07 PM Marc Weber <marcweber@att.net> wrote:
Obviously, they used the Throbac;-)
On Feb 20, 2019, at 12:36, herbert.bruderer@bluewin.ch wrote:
*How did the Romans calculate?*
https://cacm.acm.org/blogs/blog-cacm/234881-how-did-the-romans-calculate/ful...
Hi all:
Does anyone know how the Romans calculated with the Roman numeral system?
What is the meaning of the right-most slot of the Roman hand abacus?
Do you have Roman hand abaci (original devices or replicas) in your collection?
Thank you very much for your help.
Best wishes,
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