1.0Web del Museo de Informática 2.0https://museo.inf.upv.es/enadminhttps://museo.inf.upv.es/en/blog/author/museoinfnueva/rich600338<blockquote class="wp-embedded-content" data-secret="GmupxFgtaC"><a href="https://museo.inf.upv.es/en/el-abaco/">The Abacus</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://museo.inf.upv.es/en/el-abaco/embed/#?secret=GmupxFgtaC" width="600" height="338" title="“The Abacus” — Web del Museo de Informática 2.0" data-secret="GmupxFgtaC" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://museo.inf.upv.es/wp-includes/js/wp-embed.min.js </script> The Abacus > Sergio Puche García Forewords This page aims to combine the spreading of knowledge about the history of computing and calculating machines, and more specifically the abacus, with fun and direct contact with these devices. Although it is not possible to provide the reader of this page with a real abacus, it is […]https://image.ibb.co/fGcecJ/salamina.png