Space Exploration
Ken Shirriff
  • Member for 3 years, 3 months
  • Last seen more than a week ago
  • righto.com
  • San Francisco Bay Area, CA, United States
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About

Interested in computer history and reverse engineering old chips. Currently restoring a Xerox Alto.

Some projects: Wrote the Arduino IRremote library for infrared remotes. Attempted Bitcoin mining on a 55 year old IBM punch card mainframe. Got six symbols added to Unicode including the Bitcoin symbol (₿).

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26
Could the museum Saturn V's be refitted for one more flight?
Apr 2 '19
3
Bits per core for the different versions of the Apollo guidance computer core rope memory?
Apr 4 '19
2
Apollo-11 AGC core memory has 5 wires per core (rather than 3 or 4) - why?
Apr 4 '19
Top network posts
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57
Homebrew will not run wget command (Library not loaded)
38
Were people building CPUs out of TTL logic prior to the 4004, 8080 and the 6800?
36
Pillow: strange behavior using Draw.rectangle
27
A two-thresholds poison: how does it work?
23
Can you help me identify this manufacturer's logo on this component

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