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61195 LEO I console (1954)
Description of Photograph
Photograph of the LEO I engineering console.
This image appears in the interactive plan for our Virtual LEO I installation, p83.
Research comments: The various photographs of LEO I as it is being built chart its development over the years 1949-1955. This is believed to be a relatively late photograph of the engineers' console, showing it fully populated with the various instruments used to track the calculator's behaviour. Different photographs show different components inserted into the console, as the engineers developed different ways to track what the machine was doing.
In this photo, the LEO sign, usually underneath the clock, has fallen off. Beneath where the clock should be is the loudspeaker from which the noise made by the computer during its operations was emitted. Engineers could identify how well LEO was working, and even which program it was running, by the sound it was making. (CM/LM)
Physical Description: 1 photographic print; black and white
Archives Hub References: CMLEO/LS/PH/1/61195
Comment on This Photograph
This exhibit has a reference ID of CH61195. Please quote this reference ID in any communication with the Centre for Computing History.