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- This page last updated 5/3/2022
- This page last updated 5/3/2022
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Other-1 Computer Project 1974-6
Penrose Main Hospital Expansion - Moved Houses,
1974-2002, Colorado Springs
Letting the cat out of the bag...
Book excerpt: Penrose Tiles To Trapdoor Ciphers ...and the Return of Dr. Matrix, By Martin Gardner, Rev 1997, Chapters 13, 14.
Since then...
Professor Rivest's speaker Slide Set "On the Growth of Cryptography" (updated 2016).

- Journal of Cybersecurity - Exceptional Access Mandates (CW2)
- EFF - Prior Restraint
Bruce Schneier, technology security consultant (blog, and an excellent monthly newsletter):
https://www.schneier.com
Electronic Frontier Foundation:
https://www.eff.org
American Civil Liberties Union:
https://www.aclu.org
Ars Technica - breaking technology news articles in fields of IT, Business, Computers, Science, Gaming, Public Policy:
(Some Reader comments to articles may be unsuitable for children)
http://arstechnica.com/
The Guardian online newspaper:
https://www.theguardian.com
EEWeb blog about Other-1 site on Homebuilt CPUs WebRing
In late September 2017, the Ring Master David Brooks sent Homebuilt CPUs members notice that the ring would be rehosted at www.homebrewcpuring.org. While checking out the WebRing navigation buttons, I pressed Next and got neighboring site "DIY Calculator - Heath Robinson Rube Goldberg Computer". While there, I noticed a section "RAM (Core Store)" in which the author queried: " ... it would be interesting to see an 8 × 8 [ferromagnetic core] array whose drivers and sensors were implemented using the techniques of yesteryear. Does anyone out there still have the expertise to do this?" I emailed the author Clive "Max" Maxfield, writing that my site Other-1.webs.com did just that for 4K 16 bit words of core memory.
It turned out that Max is Chief Editor of the Electrical Engineering Community site EEWeb, and had just written about the WebRing, so he wrote a blog about the Other-1. He wrote blogs about the Homebuilt CPUs Webring (Sep 28, 2017), and Ring the relay sites Harry Porter's Relay Computer (Oct 4, 2017) & Zusie (Oct 6, 2017).
The EEWeb site has a membership in the thousands of EE professionals, students, hobbyists, etc, cross-referenced by interests; a question-answer design forum cross-referenced by general categories and browse tags; a handy page of on-line EE tools and calculators; projects contributed by members, cross-referenced by categories and specific topic; extensive commercial EE product news, lists, and site links; and more...
Homebuilt CPUs WebRing
Join the ring?
To join the Homebuilt CPUs ring, drop Warren a line, mentioning your page's URL. He'll then add it to the list.You will need to copy this code fragment into your page (or reference it.)
Note: The ring is chartered for projects that include a home-built CPU. It can emulate a commercial part, that′s OK. But actually using that commercial CPU doesn′t rate. Likewise, the project must have been at least partially built: pure paper designs don′t rate either. It can be built using any technology you like, from relays to FPGAs.