Hollerith key punch, model 20, 1909-1932
- Made:
- 1909-1932 in Letchworth
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LicenseThis image is released under a CC BY-NC-SA 4.0
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Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseHollerith key punch, model 20
Science Museum Group
© The Board of Trustees of the Science Museum
Hollerith key punch, model 20
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Hollerith key punch, model 20
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Hollerith key punch, model 20
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Hollerith key punch, model 20
Science Museum Group Collection
© 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
- Materials:
- metal (unknown)
- Measurements:
-
overall: 155 mm x 140 mm x 470 mm,
- type:
- punch (cutting tool)
- credit:
- Donated by Fujitsu Siemens Computers Ltd.
