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Show new changes starting from 15:36, 21 July 2025
 
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19 July 2025

16 July 2025

  • diffhist SIGABA 15:14 +1 Permissiveactionlink talk contribs (Description: There were only nine connections between control- and index rotor bank in the CSP-889 (Timothy J. Mucklow, NSA-Publication "The Sigaba/ECM II cipher machine, "A beautiful idea") The postwar Sigaba, CSP-2900, really had ten connections, but also SIX voltage Inputs at the control rotor bank, not four. And three of twentysix outputs (P, Q, R) of the control rotor bank in the CSP-2900 had no connection at all.) Tags: Mobile edit Mobile web edit