Space Exploration
Ken Shirriff's user avatar
Ken Shirriff's user avatar
Ken Shirriff's user avatar
Ken Shirriff
  • Member for 4 years, 11 months
  • Last seen more than a month 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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Top posts
All Questions Answers
Score Newest
answer
26
Could the museum Saturn V's be refitted for one more flight?
Apr 2, 2019
question
18
Why is 51.8° inclination standard for Soyuz?
Jan 16
answer
4
Bits per core for the different versions of the Apollo guidance computer core rope memory?
Apr 4, 2019
answer
4
Apollo-11 AGC core memory has 5 wires per core (rather than 3 or 4) - why?
Apr 4, 2019
Top network posts
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60
Homebrew will not run wget command (Library not loaded)
44
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?
26
Did the Apollo Guidance Computer really use 60% of the world's ICs in 1963?

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