<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Obviously, they used the Throbac;-)<div class=""><br class=""></div><div class=""><img apple-inline="yes" id="645F3089-425C-4927-BCE0-1A990389A987" src="cid:25C19D11-E4E3-4483-A05C-83E696BAB689@hq.computerhistory.org" class=""></div><div class=""><a href="https://webmuseum.mit.edu/detail.php?term=shannon&module=objects&type=keyword&x=8&y=4&kv=75603&record=15&page=1" class="">https://webmuseum.mit.edu/detail.php?term=shannon&module=objects&type=keyword&x=8&y=4&kv=75603&record=15&page=1</a></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div><blockquote type="cite" class=""><div class="">On Feb 20, 2019, at 12:36, <a href="mailto:herbert.bruderer@bluewin.ch" class="">herbert.bruderer@bluewin.ch</a> wrote:</div><br class="Apple-interchange-newline"><div class=""><p class=""><b style="mso-bidi-font-weight:normal" class=""><span lang="EN-US" style="margin: 0px;" class=""><font face="trebuchet ms,sans-serif" class="">How did the Romans calculate?</font></span></b></p><p class="">
<span lang="EN-US" style="margin: 0px;" class=""><font face="trebuchet ms,sans-serif" class=""><a href="https://cacm.acm.org/blogs/blog-cacm/234881-how-did-the-romans-calculate/fulltext" class=""><font color="#0000ff" class="">https://cacm.acm.org/blogs/blog-cacm/234881-how-did-the-romans-calculate/fulltext</font></a> </font></span></p><p class=""><font face="trebuchet ms,sans-serif" class=""></font><br class=""></p><p class="">Hi all:</p><p class="">Does anyone know how the Romans calculated with the Roman numeral system?</p><p class="">What is the meaning of the right-most slot of the Roman hand abacus?</p><p class="">Do you have Roman hand abaci (original devices or replicas) in your collection? </p><p class="">Thank you very much for your help.</p><p class="">Best wishes,</p><p class="">Herbert Bruderer</p>_______________________________________________<br class="">This email is relayed from members at <a href="http://sigcis.org" class="">sigcis.org</a>, the email discussion list of SHOT SIGCIS. Opinions expressed here are those of the member posting and are not reviewed, edited, or endorsed by SIGCIS. The list archives are at <a href="http://lists.sigcis.org/pipermail/members-sigcis.org/" class="">http://lists.sigcis.org/pipermail/members-sigcis.org/</a> and you can change your subscription options at <a href="http://lists.sigcis.org/listinfo.cgi/members-sigcis.org" class="">http://lists.sigcis.org/listinfo.cgi/members-sigcis.org</a></div></blockquote></div><br class=""></div></body></html>