Retrocomputing
Ken Shirriff's user avatar
Ken Shirriff's user avatar
Ken Shirriff's user avatar
Ken Shirriff
  • Member for 6 years, 4 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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Top posts
All Questions Answers
Score Newest
answer
43
Were people building CPUs out of TTL logic prior to the 4004, 8080 and the 6800?
Jan 4, 2019
answer
26
Did the Apollo Guidance Computer really use 60% of the world's ICs in 1963?
Aug 28, 2019
answer
12
How big is a mainframe?
Feb 3, 2021
answer
12
Are there any articles elucidating the history of the POPCOUNT instruction?
Jan 5, 2019
answer
6
Were there any commercially available graphical interfaces before the apple Lisa?
Jan 5, 2019
Top network posts
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60
Homebrew will not run wget command (Library not loaded)
36
Pillow: strange behavior using Draw.rectangle
27
A two-thresholds poison: how does it work?
26
Could the museum Saturn V's be refitted for one more flight?
23
Can you help me identify this manufacturer's logo on this component

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