Dayton Codebreakers
A story so important that it was secret for 50 years
Skip to content
  • The Story in Brief
  • The Story In Depth
  • In The Documentary
  • Personnel
  • And more . . .
  • UDOLLI 2020

Electronics

In This Section

  • The 1939 Desch/Mumma Calculator
  • Cryptanalytic Equipment in operation
  • Specs for the Thyratron
  • Chassis of the Cryptanalytic Bombe

  • Lost? You are here….

    Home > The Story In Depth > Electronics

  • UDOLLI

    Our class description is here!

    UDOLII

  • on this site

    • 10 most FAQs
    • By the Numbers…
    • US Navy Cryptanalytic Bombe
    • Joseph R. Desch
    • Op-20-G
    • Naval Communications Annex, 3801 Nebraska Avenue
    • Turing in Dayton
    • The Accumulator
    • Notes & Sources
    • Webmaster Debbie Anderson

  • Stray Thoughts

    A file that big?
    It might be very useful.
    But now it is gone.

    Haikus for  the Information Age

I ask that visitors be patient when links or pages disappear or become mangled in the vagaries of PHP and generated code. Frequent additions and updates make for human error -- please report any broken links or other problems to Deborah Anderson, site manager--your help is appreciated.

E-mails to Deborah Anderson, in care of Dayton Codebreakers, are still appreciated, and I will try to respond promptly. Your messages are what make this job worthwhile.

Use of materials by permission. Materials other than those clearly marked as National Archives materials are not in the public domain. More information here.