A keypunch was a device used for precisely punching holes into cards at specific locations, determined by the keys struck by a human operator. The verifier operators entered exactly the same data as the keypunch operator, and the machine then checked to see if the punched data matched. The IBM 056 machine was the verifier companion to the IBM 024 Card Punch and IBM 026 Printing Card Punch.
This image was catalogued as part of the Breaking New Ground Project in partnership with the John Laing Charitable Trust in 2019-20.
This is part of the Series: JLP01/08 John Laing Photographic Collection Black and White Negatives; within the Collection: JLP01 John Laing Photographic Collection
© Historic England Archive. John Laing Photographic Collection
Mid 20th Century Local Government Office, People At Work, Science And Technology, Women's History
Our website works best with the latest version of the browsers below, unfortunately your browser is not supported. Using an old browser means that some parts of our website might not work correctly.
