I've read the Colossus book

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-book:
-  author: Paul Gannon
-  cover_image: 'colossus-bletchley-parks-greatest-secret.jpg'
-  publication_year: '2007'
-  title: 'Colossus: Bletchley Park''s Greatest Secret'
-plan:
-  date_added: '2019-08-13'
----

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+---
+book:
+  author: Paul Gannon
+  cover_image: 'colossus-bletchley-parks-greatest-secret.jpg'
+  publication_year: '2007'
+  title: 'Colossus: Bletchley Park''s Greatest Secret'
+plan:
+  date_added: '2019-08-13'
+review:
+  date_read: 2021-02-07
+  format: paperback
+  rating: 4
+---
+
+This is a detailed account of the work done to build Colossus at Bletchley Park during WWII.
+There is a lot of information that I haven't read elsewhere, including a lot of detail about the individual Fish links and variants of ciphers used by the Germans.
+
+A lot of the details are reserved for the appendix, so you can follow the narrative without getting too bogged down.
+(I've read so many accounts of wheel breaking, wheel setting, and so on, I did skip those passages in this book.)
+
+I took lots of notes and learnt quite a few things, and something I was struck by is the number of parallels to modern software development.
+Although the output looks very different, many of the design principles look very familiar.
+
+I'd recommend this for anybody interested in the history of Bletchley Park.