约 14,800 个结果
在新选项卡中打开链接
  1. IBM
    https://www.ibm.com/history/punc…

    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 revolutionized the company’s production of punched cards.
    反馈
  2. IBM
    https://www.ibm.com/history/punched-…

    The punched card tabulator | IBM

    About 80 years prior, Joseph Marie Jacquard of France devised a way to use punched cards to automate steam-powered weaving looms. In the mid-1830s, English mathematician Charles Babbage developed plans for a computing …

  3. IBM
    https://www.ibm.com/docs/en/zos/2.4.0?topic=...

    IEBPTPCH (Print-Punch) Program - IBM

    标记:
    Iebptpch Examples
    PDSE
  4. IBM
    https://www.ibm.com/docs/en/zos/3.1.0?topic=punch...

    Interpretation of punched cards - IBM

    标记:
    Punched card
    IBM
  5. IBM
    https://www.ibm.com/docs/en/zvse/6.2?topic=SSB27H...

    Processing a Punched Card File - IBM

    标记:
    Punched card
    IBM 3525
    Ibm 56 Card Punch Pic
    Ibm 3555 Service Manual
  7. IBM
    https://www.ibm.com/history/wallace-ec…

    Wallace Eckert - IBM

    In 1933, Columbia installed a full IBM punched card assembly, dubbed the Astronomical Calculator, in the Astronomy Department, based on Eckert’s request and specifications. From there Eckert rigged various IBM calculators and …

    标记:
    Punched card
    Wallace County
  8. IBM
    https://www.ibm.com/history/social-sec…

    The birth of Social Security | IBM

    On September 16, 1936, IBM won the contract and quickly unveiled a technological workhorse developed specifically for the SSA: the IBM 077 Collator, a massive machine for reading and organizing punched cards into a single …

    标记:
    Social Security
    Unassisted childbirth
  9. 其他用户还问了以下问题
    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
    Can a card file be read and punched on IBM 3525?
    The section Programming for Associated Files provides hints for using the IBM 3525 to perform multiple functions on a file in one pass. A card file on the IBM 3525 can be both read and punched in one run. To accomplish this, your program must define the file as combined. Coding considerations for a combined file are given under Updating a Record.

    Processing a Punched Card File - IBM

    ibm.com
    Who invented punched cards?
    About 80 years prior, Joseph Marie Jacquard of France devised a way to use punched cards to automate steam-powered weaving looms. In the mid-1830s, English mathematician Charles Babbage developed plans for a computing engine — later dubbed the Analytical Engine — that could do math using instructions from punched cards.

    The punched card tabulator | IBM

    ibm.com
    What is punched card equipment?
    Punched card equipment normally performs only one function, for example reading cards or punching cards. Certain types of punched card equipment, so called card read punch machines, can perform both of these functions in a single path. The IBM 3525 can also print on the cards of a file.

    Processing a Punched Card File - IBM

    ibm.com
    Can a card read punch machine print on a file?
    Certain types of punched card equipment, so called card read punch machines, can perform both of these functions in a single path. The IBM 3525 can also print on the cards of a file. Logically, however, data to be printed is a separate file; you must define this file in your program by a DTFPR macro and must also code a PRMOD macro.

    Processing a Punched Card File - IBM

    ibm.com
    Why did Hollerith use punched cards?
    Hollerith’s cards were used for the 1890 US Census, which finished months ahead of schedule and under budget. Punched cards emerged as a core product of what would become IBM more than two decades later. IBM introduced the “IBM Computer Card” in 1928 as the result of a secretive competition between the company’s two top research teams.

    The punched card - IBM

    ibm.com
    反馈
  10. IBM
    https://www.ibm.com/docs/en/zos/2.1.0?topic=jobs...

    How the IBM-Supplied Output Separator Routine Works

    标记:
    Punched card
    Channel 9 Punch
    Ibm Separation
    Separator Routine
  11. IBM
    https://www.ibm.com/history/077-collator

    The IBM 077 Collator

    The 077 Collator performed many card-filing and -pulling operations. As a filing machine, the 077 simultaneously fed and compared two groups of punched cards: records already in file and those yet to be filed. It then merged the …

  12. IBM
    https://www.ibm.com/thought-leadershi…

    The Apollo Missions: Transforming the world | IBM

    Announced in May 1949 as a versatile general-purpose computer, the IBM Card-Programmed Electronic Calculator (CPC) was the first digital computer used in the US space program. It performed predetermined sequences of arithmetical …

    标记:
    Apollo Program
    Apollo Missions
    Apollo Mission Computer Memory
  14. 某些结果已被删除