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Ken Shirriff

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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  • San Francisco Bay Area, CA, United States
  • righto.com
  • Member for 2 years, 3 months
  • 23 profile views
  • Last seen Jan 11 at 23:58

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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

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