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  1. Punched card - Wikipedia

  2. The punched card - IBM

  3. Computer programming in the punched card era - Wikipedia

  4. What is a Punch Card? - Computer Hope

  5. What is a Punch Card? Definition and Uses - GeeksforGeeks

  6. Punch Cards for Data Processing | Smithsonian Institution

  7. Punched card | What is, characteristics, history, how it ... - Euston96

  8. Punched card - Simple English Wikipedia, the free encyclopedia

  9. Punch Cards | National Museum of American History

  10. Punched card input/output - Wikipedia