File:IBM Magnetic Card.jpg
IBM_Magnetic_Card.jpg (557 × 280 pixels, file size: 63 KB, MIME type: image/jpeg)
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Summary
[edit]DescriptionIBM Magnetic Card.jpg |
English: Magnetic card (c. 1980) as used in the IBM MC Selectric typewriter and IBM MC Selectric Composer. Compatible products were available from Memorex and Scotch (3M).
The pair of longitudinal wide parallel bars are abrasion from the friction rollers that moved the card relative to the reader, and ejected the card on demand. The number (2564 in this example) is not a product code but a random code so that a specific card could be identified. Image (and ruler) were scanned from a physical card on 2007-12-12.Español: Tarjeta magnética (c. 1980) como la usada en las IBM MC Selectric y IBM MC Selectric Composer. Productos compatibles estaban disponibles de Memorex y Scotch (3M). |
Date | |
Source | http://en.wikipedia.org/wiki/File:IBM_Magnetic_Card.jpg |
Author | Pointillist |
Permission (Reusing this file) |
GNU Free Documentation License, Version 1.2 |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:49, 25 September 2009 | ![]() | 557 × 280 (63 KB) | Piero71 (talk | contribs) | {{Information |Description={{en|1=Magnetic card (c. 1980) as used in the IBM MC Selectric typewriter and [[en:IBM_Selectric_typewriter#Selectric_Composers|IBM MC Selectric Composer |
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Orientation | Normal |
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Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 15:18, 12 December 2007 |
Color space | sRGB |