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61867 Hollerith Tabulator, LEO I (1953)

Description of Photograph

Digital copy of a photograph of the British Tabulating Machines Hollerith Tabulator which was installed on LEO I.

Caption: 'Hollerith special tabulators printing @ 100 lines/minute on 100 columns all having 0-11 on every column. [ms] Nov 1953'.

Research comments: In his book, LEO: The First Business Computer, Peter Bird notes that the Hollerith tabulators supplied by BTM were special in that they were designed "to print the figures 10 and 11 together as one character, to handle the peculiar UK requirement of 10d and 11d sterling notation of that time" (pp68).

Provenance
Digital copy made by John Daines, LEO Computers Society, of a photograph in the LEO Computers Collection (formerly part of the National Archive of Historic Computing) at the University of Manchester Library: NAHC/LEO/B1-51

Date: November 1953

Physical Description: 1 digital image (jpeg); black & white; image includes original typed caption

Archives Hub References: CMLEO/LS/PH/1/61867
NAHCB1-51

Other References: DCMLEO20210214042

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