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### Stray Thoughts

### CODE GIRLS

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Site last updated January 17, 2020 @ 3:07 pm; This content last updated August 20, 2012 @ 9:44 pm

Leibniz (1646-1716) saw binary coding as the key to a universal language and credited its invention to the Chinese, seeing in the hexagrams of the I Ching the remnants of “a Binary Arithmetic .. which I have rediscovered some thousands of years later.” Leibniz’s notes show the development of simple algorithms for translating between decimal and binary notation and for performing the basic functions of arithmetic as mechanically iterated operations on strings of zeros and ones.

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Turing’s Cathedral, George Dyson

In the summer of 2015 I was contacted by an author interested in the stories of the Sugar Camp WAVES–one of my favorite topics. Now their story as well as that of the WACS at Arlington Hall is available and wonderfully successful.

“Code Girls is an extraordinary book by an extraordinary author. Liza Mundy’s portraits of World War II codebreakers are so skillfully and vividly drawn that I felt as if I were right there with themâ€”mastering ciphers, outwitting the Japanese army, sinking ships, breaking hearts, and even accidentally insulting Eleanor Roosevelt. I am an evangelist for this book: You must read it.”

author of The Good Girls Revolt – Lynn Povich