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    IBM 2501 - Wikipedia

    https://en.wikipedia.org/wiki/IBM_2501

    The IBM 2501 is a punched-card reader from IBM with models for the System/360 and System/370 mainframe systems and for the IBM System/360 Model 20, the IBM 1130 and IBM System/3 minicomputers. 2501 models can read 80-column cards at either 600 or 1000 cards per minute (CPM). … See more

    Usage

    The 2501 uses a photoelectric sensor to read the data punched in the card. Cards are read serially (column by column) and the reader uses a simplified "straight through" card path. "Each column is read twice and the two … See more

    Features

    A special feature (RPQ) is available for all models to allow them to read optically marked (OMR) cards. See more

    See also

    • Punched card input/output
    • Computer programming in the punched card era See more

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  2. IBM 2501 — Wikipedia Republished // WIKI 2

    https://wiki2.org/en/IBM_2501

    WebThe IBM 2501 is a punched-card reader from IBM with models for the System/360 and System/370 mainframe systems and for the IBM System/360 Model 20, the IBM 1130 …

  3. IBM 2501 - Wikipedia @ WordDisk

    https://worddisk.com/wiki/IBM_2501

    WebThe IBM 2501 is a punched-card reader from IBM with models for the System/360 and System/370 mainframe systems and for the IBM System/360 Model 20, the IBM 1130 …

  4. Talk:IBM 2501 - Wikipedia

    https://en.wikipedia.org/wiki/Talk:IBM_2501

    WebTalk:IBM 2501 Jump to ... Computing, a collaborative effort to improve the coverage of computers, computing, and information technology on Wikipedia. If you would like to …

  5. Category:IBM 2501 - Wikimedia Commons

    https://commons.wikimedia.org/wiki/Category:IBM_2501

    WebMedia in category "IBM 2501" The following 7 files are in this category, out of 7 total. IBM 2501 at VCF East 7 (2011).jpg. IBM 2501 dettaglio interno.jpg. IBM 2501 dettaglio …

  6. The IBM 2501 Card Reader - columbia.edu

    www.columbia.edu/cu/computinghistory/2501.html

    WebAug 16, 2022 · The IBM 2501 Card Reader. At Columbia University, the installation of these units for public use in late 1971 was a significant step along the path of bringing users and …

  7. IBM 2501 - Unionpedia, the concept map

    https://en.unionpedia.org/i/IBM_2501

    WebThe IBM 2501 is a punched-card reader from IBM with models for the System/360 and System/370 mainframe systems and for the IBM System/360 Model 20, the IBM 1130 …

  8. ไอบีเอ็ม 2501

    https://sawadee.wiki/wiki/IBM_2501

    WebIBM 2501เป็นเจาะบัตรอ่านจาก IBM ที่มีรูปแบบสำหรับระบบ / 360และระบบ / 370 เมนเฟรมระบบและสำหรับระบบ IBM / 360 รุ่น 20ที่ไอบีเอ็ม 1130และไอบีเอ็มระบบ / 3 …

  9. IBM 2501 — Google Arts & Culture

    https://artsandculture.google.com/entity/ibm-2501/g11c4bbzrrz?hl=en

    WebThe IBM 2501 is a punched-card reader from IBM with models for the System/360 and System/370 mainframe systems and for the IBM System/360 Model 20, the IBM 1130 …

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  10. Ib-2501.com Site

    https://ozur.dcmusic.ca/ib-2501.com

    WebIb-2501.com. This domain provided by gabia.com at 2022-06-22T17:54:27Z (0 Years, 94 Days ago), expired at 2023-06-22T17:54:27Z (0 Years, 270 Days left). Site is running on …

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