SWAC Williams-Kilburn tube

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Date Introduced
1951
Photographer
Richards, Mark
Dimensions
8 1/2 x 9 x 25 1/2 in.
Manufacturer
Institute for Numerical Analysis. National Bureau of Standards
Credit Line
Gift of Harry D. Huskey
Copyright Owner
© Mark Richards
Location
United States
Object ID
X872.88

SWAC, like the Manchester “Baby,” used Williams-Kilburn tubes for memory. The unreliability of commercial tubes was traced to microscopic specks of lint embedded in the tubes’ phosphor because they had been manufactured in a converted mattress factory.