The Hollerith Machine

Holleriths were also used to coordinate elements of the Holocaust[1].<p>[1] - <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;IBM_and_the_Holocaust" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;IBM_and_the_Holocaust</a>

There&#x27;s a beautiful exhibit of one of these in the Computer History Museum. Just saw it last weekend.<p><a href="http:&#x2F;&#x2F;www.computerhistory.org&#x2F;revolution&#x2F;punched-cards&#x2F;2&#x2F;2" rel="nofollow">http:&#x2F;&#x2F;www.computerhistory.org&#x2F;revolution&#x2F;punched-cards&#x2F;2&#x2F;2</a>

The Holleriths (later IBM Tabulators) were also used extensively in Bletchley Park and the Heliopolis station as part of the technique for cracking Italian Air codes - explaining why there&#x27;s one or two knocking about in the National Museum of Computing in Bletchley.

There&#x27;s a great segment in the documentary series <i>Connections</i> that discusses the Hollerith Machine: <a href="https:&#x2F;&#x2F;youtu.be&#x2F;_mT_futz23s?t=2m37s" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;_mT_futz23s?t=2m37s</a>