<signature id="signaturefinder_x-mail-compose1550742439579"><div><span style="display: inline !important; float: none; background-color: transparent; color: rgb(0, 0, 0); font-family: trebuchet ms; font-size: 13px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">Thanks. Possibly the Chinese took over the Roman abacus. There were indeed trade relations (e.g. Asia minor: Antikythera mechanism; silk road).</span><b></b><i></i><u></u><sub></sub><sup></sup><strike></strike><br></div></signature><blockquote style="margin-right: 0px; margin-left:15px;">----Ursprüngliche Nachricht----<br>Von : jcortada@umn.edu<br>Datum : 20/02/2019 - 22:11 (MZ)<br>An : marcweber@att.net<br>Cc : herbert.bruderer@bluewin.ch, members@sigcis.org, members@lists.sigcis.org<br>Betreff : Re: [SIGCIS-Members] History of Rome. How did they calculate?<br><br><div dir="ltr">
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
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On Wed, Feb 20, 2019 at 3:07 PM Marc Weber <
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Obviously, they used the Throbac;-)
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On Feb 20, 2019, at 12:36,
<a style="cursor:pointer; text-decoration:underline; color:blue" onclick="javascript:handleMailto('mailto:herbert.bruderer@bluewin.ch');">herbert.bruderer@bluewin.ch</a> wrote:
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<p><b><span lang="EN-US" style="margin: 0.0px;"><font face="trebuchet ms,sans-serif">How did the Romans calculate?</font></span></b></p>
<p><span lang="EN-US" style="margin: 0.0px;"><font face="trebuchet ms,sans-serif"><a href="https://cacm.acm.org/blogs/blog-cacm/234881-how-did-the-romans-calculate/fulltext"><font color="#0000ff">https://cacm.acm.org/blogs/blog-cacm/234881-how-did-the-romans-calculate/fulltext</font></a> </font></span></p>
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<p>Hi all:</p>
<p>Does anyone know how the Romans calculated with the Roman numeral system?</p>
<p>What is the meaning of the right-most slot of the Roman hand abacus?</p>
<p>Do you have Roman hand abaci (original devices or replicas) in your collection? </p>
<p>Thank you very much for your help.</p>
<p>Best wishes,</p>
<p>Herbert Bruderer</p>_______________________________________________
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James W. Cortada
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Senior Research Fellow
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Charles Babbage Institute
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University of Minnesota
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