Hollerith key punch, model 20, 1909-1932
- Made:
- 1909-1932 in Letchworth
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum
Hollerith key punch, model 20, made by the British Tabulating Machine Company Limited, Letchworth, Hertfordshire, England, 1909-1932.
Key punches were used for punching holes in stiff paper cards. The pattern of the holes recorded data, which could then be read by unit records equipment, early data processing machines. Punched cards were later adapted for use with some of the earliest computers. This key punch was used with 45 column cards.
Details
- Category:
- Computing & Data Processing
- Object Number:
- 1932-331
- type:
- punch (cutting tool)
- taxonomy:
-
- furnishing and equipment
- tools & equipment
- credit:
- Donated by Fujitsu Siemens Computers Ltd.
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Data in the title, made, maker and details fields are released under Creative Commons Zero
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