Remington_Rand_punched_card.mw.jpg

Description
English: Remington Rand punched card at the bottom, IBM card at the top. Note that the Remington Rand card has round holes. There are 45 columns and two groups of six rows each that are encoded independently, for a total of 90 possible encoded characters. The IBM card has rectangular holes and 80 columns, with only one character per column.
Date
Source Flickr : Punched cards
Author Marcin Wichary
Permission
( Reusing this file )
This image, which was originally posted to Flickr , was uploaded to Commons using Flickr upload bot on 30 December 2012, 03:36 by ArnoldReinhold . On that date, it was confirmed to be licensed under the terms of the license indicated.
w:en:Creative Commons
attribution
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12 January 2008