File:Control Data 160-A.jpg

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Description

Control Data 160-A computer. Truly a "desk top" machine. The paper-tape reader and punch is on the right (input and output for the computer) and on the left is a 7-track tape unit that could record at 667 (later 800) bits-per-inch on a 2400 ft long tape.

Central memory was 4K of 12-bit words, or effectively 8K characters - so you were doing well if you had a program that could handle 4000-character blocks on tape (half of central memory). This resulted in a block of about 6 inches plus another inch for the inter-block gap.

That resulted in a rule of thumb - 4000 blocks of 4000 characters on a reel of tape, so approximately 16 Mbytes in today's terminology
Date
Source Flickr: Early Control Data machine
Author Jitze Couperus
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(Reusing this file)
This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 9 May 2012, 11:59 by ArnoldReinhold. On that date, it was confirmed to be licensed under the terms of the license indicated.
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inception

21 January 2010

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image/jpeg

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4582f6d7d5aef731bf216d4061830b051006c236

determination method: SHA-1

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2,655,245 byte

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3,974 pixel

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Date/TimeThumbnailDimensionsUserComment
current05:25, 4 February 2015Thumbnail for version as of 05:25, 4 February 20153,204 × 3,974 (2.53 MB)Bubba73Color correction, based on the original
18:57, 18 May 2014Thumbnail for version as of 18:57, 18 May 20143,204 × 3,974 (2.51 MB)Mornwhite balance
12:00, 9 May 2012Thumbnail for version as of 12:00, 9 May 20123,204 × 3,974 (2.49 MB)Flickr upload botUploaded from http://flickr.com/photo/40648743@N00/4328945132 using Flickr upload bot
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