Retrocomputing Beta
Ken Shirriff
  • Member for 4 years, 11 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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All Questions Answers Articles
Votes Newest
37
Were people building CPUs out of TTL logic prior to the 4004, 8080 and the 6800?
Jan 4 '19
22
Did the Apollo Guidance Computer really use 60% of the world's ICs in 1963?
Aug 28 '19
10
Are there any articles elucidating the history of the POPCOUNT instruction?
Jan 5 '19
9
How big is a mainframe?
Feb 3
6
Were there any commercially available graphical interfaces before the apple Lisa?
Jan 5 '19
Top network posts
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57
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?
18
does 8085 CPU have an extra register within ALU?

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