[SIGCIS-Members] History of Rome. How did they calculate?

[Marc Weber]

Obviously, they used the Throbac;-)


https://webmuseum.mit.edu/detail.php?term=shannon&module=objects&type=keyword&x=8&y=4&kv=75603&record=15&page=1 <https://webmuseum.mit.edu/detail.php?term=shannon&module=objects&type=keyword&x=8&y=4&kv=75603&record=15&page=1>


> On Feb 20, 2019, at 12:36, herbert.bruderer at bluewin.ch wrote:
> 
> How did the Romans calculate?
> 
> https://cacm.acm.org/blogs/blog-cacm/234881-how-did-the-romans-calculate/fulltext <https://cacm.acm.org/blogs/blog-cacm/234881-how-did-the-romans-calculate/fulltext> 
> 
> 
> 
> 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,
> 
> Herbert Bruderer
> 
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