File:IBM 604 'Electronic Calculator' (1948).jpg

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This programmable electronic calculator uses some 1400 electron tubes; its weight is more than 600 kilograms. Instead of using a keyboard and screen, input and output was by means of punched cards. The punched card machine (almost the same size as the 604 itself) is not shown here.

The 604 was IBM's first step into the realm of electronic computers, and at the time had many innovative features. But it differs in so many ways from modern calculators (speed, size, ease of use, reliability, price...) that you can hardly compare them.

Visit my blog at ideonexus.com for science news and speculation.
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Source Flickr: IBM 604 'Electronic Calculator' (1948)
Author Ryan Somma
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This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 24 November 2011, 16:59 by ArnoldReinhold. On that date, it was confirmed to be licensed under the terms of the license indicated.
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current04:57, 6 January 2015Thumbnail for version as of 04:57, 6 January 20153,072 × 2,048 (1.67 MB)Bubba73 (talk | contribs)color correction
16:59, 24 November 2011Thumbnail for version as of 16:59, 24 November 20113,072 × 2,048 (3.2 MB)Flickr upload bot (talk | contribs)Uploaded from http://flickr.com/photo/14405058@N08/3241961057 using Flickr upload bot

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