Description of Photograph

Digital copy of a photograph of the central control units on LEO I.

Caption: 'Another view of the "co-ordinator" - Central control units.  [ms] 28.1.53'

This image appears in the interactive plan for our Virtual LEO I installation, p45.

 

Research comments: In this photograph the individual units that make up the racks can be clearly seen. The 'handles' that can be seen along the sides allow the units to be slotted in and out; to minimise downtime and improve reliability units could be switched with a spare. Interestingly, it looks as if the units are labelled with tags. On the 'bench' in front of the rack is an oscilloscope, used for testing and finding faults with the electrical circuits. (LM)

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/B1-35

Date: 28th January 1953

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

Archives Hub References: CMLEO/LS/PH/1/61864
NAHCB1-35

Other References: DCMLEO20210214027
                  
                  
                  
                  


Comment on This Photograph

This exhibit has a reference ID of CH61864. Please quote this reference ID in any communication with the Centre for Computing History.