约 266,000 个结果
在新选项卡中打开链接
  1. IBM
    https://www.ibm.com/history/punched-…

    The punched card - IBM

    The 1935 Social Security Administration contract required millions of IBM punched cards and tabulating machines to process data and print checks. IBM’s Fred M. Carroll developed a series of high-speed rotary presses that …

    标记:
    Punched card
    IBM

  2. IBM Card Punch machine的图片

    bing.com/images
    twobithistory.org
    The IBM 029 Card Punch
    physicsmuseum.uq.edu.au
    IBM Card Punch Model 29 - Physics Museum - The University of Queensland, Australia
    youtube.com
    IBM punched card sorter Type 83, from 1955 - YouTube
    righto.com
    Booting the IBM 1401: How a 1959 punch-card computer loads a program
    alamy.com
    Mid 20th century IBM 026 Printing Card Punch / key punch / punched card / punch card machine for ...
    columbia.edu
    The IBM 029 Key Punch
    查看所有图像
  3. Wikipedia
    https://en.wikipedia.org/wiki/Punched_card

    Punched card - Wikipedia

  4. Two-Bit History
    https://twobithistory.org/.../ibm-029-car…

    The IBM 029 Card Punch - Two-Bit History

    2018年6月23日 · One of the most widely used card punch machines was the IBM 029. It is perhaps the best remembered card punch today. The IBM 029 was released in 1964 as part of IBM’s System/360 rollout.

    标记:
    IBM 029 Card Punch
    Computer Punch Cards
    IBM 029 Keypunch Machine Image
  6. 知乎专栏
    https://zhuanlan.zhihu.com/p/53300998

    打孔卡：上世纪的老程序员是如何编程的 - 知乎

    标记:
    打孔机
    Punch
  7. Wikipedia
    https://en.wikipedia.org/wiki/Punched_card_input/output

    Punched card input/output - Wikipedia

  8. Columbia University
    https://columbia.edu/cu/computinghistor…

    IBM Punch Cards - Columbia University

    Until the mid-1970s, most computer access was via punched cards. Programs and data were punched by hand on a key punch machine such as the IBM 026 and fed into a card reader like the IBM 2501. Large computing sites such as …

    标记:
    Punched card
    Computer Punch Cards
    IBM Punch Card
    Computer Card Punch
  9. 其他用户还问了以下问题
    What was IBM's last key punch?
    In 1971, IBM announced its last key punch, the 129, which was an 029 with buffer memory, allowing data to be entered, checked, and edited before committing it to the card; storing up to six different formatting programs (equivalent to program-drum cards); and able to accumulate counts and totals.

    The IBM 029 Key Punch - Columbia University

    columbia.edu
    How does a punching machine work?
    A column number indicator right above the punching station told you which column you were currently punching. With every keystroke, the machine would punch the requisite holes, print the appropriate character at the top of the card, and then advance the card through the punching station by one column.

    The IBM 029 Card Punch - Two-Bit History

    twobithistory.org
    What is a card punch machine?
    They had card punch machines (also known as key punches), which allowed them to punch holes in cards using a typewriter-style keyboard. And card punches were hardly new technology—they were around as early as the 1890s. One of the most widely used card punch machines was the IBM 029. It is perhaps the best remembered card punch today.

    The IBM 029 Card Punch - Two-Bit History

    twobithistory.org
    When did IBM use a punched card?
    IBM used "IBM card" or, later, "punched card" at first mention in its documentation and thereafter simply "card" or "cards". [ 33 ][ 34 ] Specific formats were often indicated by the number of character positions available, e.g. 80-column card.

    Punched card - Wikipedia

    en.wikipedia.org
    Why did IBM use punched cards during the New Deal?
    During the United States New Deal, IBM’s punched cards were used not only in the tabulation and recordkeeping of government contracts but also to print government-issued checks. The 1935 Social Security Administration contract required millions of IBM punched cards and tabulating machines to process data and print checks.

    The punched card - IBM

    ibm.com
    Why did IBM and Remington Rand sell card punchers?
    Woman operating the card puncher, c.1940 Both IBM and Remington Rand tied punched card purchases to machine leases, a violation of the US 1914 Clayton Antitrust Act. In 1932, the US government took both to court on this issue. Remington Rand settled quickly. IBM viewed its business as providing a service and that the cards were part of the machine.

    Punched card - Wikipedia

    en.wikipedia.org
    反馈
  10. 维基百科
    https://zh.wikipedia.org/wiki/打孔卡

    打孔卡 - 维基百科，自由的百科全书

    标记:
    Punched card
    打孔卡
  11. Columbia University
    http://www.columbia.edu/cu/computing…

    The IBM 026 Key Punch - Columbia University

    An expert key punch operator in data-entry applications, with the aid of a well-designed program card, could punch 200 cards per hour. There was a huge market for key punch operators in the 1950s and 60s.

    标记:
    IBM 029 Card Punch
    IBM 026 Key Punch
    IBM 026 Schematic
    IBM 26
  12. IBM
    https://www.ibm.com/history/punched-…

    The punched card tabulator | IBM

    The Hollerith Printing Tabulator and Summary Card Punch from 1929. An electrical counting machine automated data handling, transformed industries, and became the basis for a highly profitable new company called IBM.

    标记:
    Punched card
    IBM Punch Card
  13. Columbia University
    https://www.columbia.edu/cu/computin…

    The IBM 029 Key Punch - Columbia University

    2024年6月28日 · The IBM 29 Card Punch (also called the 029 or Type 029 Key Punch or Keypunch), introduced about 1964 to coincide with the introduction of the IBM 360. Available in nine models with various combinations of keyboard …

  15. 某些结果已被删除