/members-area/b/blog/posts/ibm-701-plugable-modulesIBM 701 Plug-in Unitfigure 1.The 701&#39;s vacuum tubes were collected into &quot;pluggable units&quot;, a concept introduced with IBM&#39;s 604. The 701 was developed in 1952 in the Poughkeepsie Laboratory. The 701 known as the Defense Calcula...en-USTelligent Community 12https://community.element14.com/members-area/b/blog/posts/ibm-701-plugable-modulesTue, 08 Dec 2015 21:35:04 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:63e6d9ab-7135-452c-8fc7-1dc4881de70bDAB0<p>Yes, technology has come a long way since then.</p><p>&nbsp;</p><p>We were still taught tube technology in the early 1970&#39;s as there was still many legacy devices were still in use.</p><p>&nbsp;</p><p>Most important, these devices worked, though the tools for software development were incredibly primitive by today&#39;s standards.</p><p>&nbsp;</p><p>DAB</p><img src="https://community.element14.com/aggbug?PostID=893&AppID=75&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/members-area/b/blog/posts/ibm-701-plugable-modulesTue, 08 Dec 2015 08:18:18 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:63e6d9ab-7135-452c-8fc7-1dc4881de70btonyboubady0<p>Still makes me fall in love with it...</p><img src="https://community.element14.com/aggbug?PostID=893&AppID=75&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/members-area/b/blog/posts/ibm-701-plugable-modulesTue, 08 Dec 2015 06:19:31 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:63e6d9ab-7135-452c-8fc7-1dc4881de70bmcb10<p>Amazing the change in technology within less than a generation.</p><p>&nbsp;</p><p>Thanks for sharing</p><p>Mark</p><img src="https://community.element14.com/aggbug?PostID=893&AppID=75&AppType=Weblog&ContentType=0" width="1" height="1">