Close-up of the ABC

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  • Details
  • Description
Date
1942 ca.
Dimensions
3 1/2 x 4 in.
Publisher
Iowa State University
Credit Line
Courtesy of Iowa State University Library. Special Collections Department
Copyright Owner
© Iowa State University
Object ID
102618819

This shows the card reader and binary punch used for intermediate results, and a memory drum with its cover removed. Each drum stored 30 numbers.