Computer Science
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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, 11 months
  • 21 profile views
  • Last seen Nov 27 '19 at 16:31

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6 Do computers actually use carry-lookahead adders? Jan 28 '17
3 Programming Language Hierarchy Jan 5 '19
3 How did early computers handle variable word length? Jan 28 '17
2 Binary 2s Compliment Applied Twice Gives Original - How? Jan 5 '19
1 Why do Computers use Hex Number System at assembly language? Jan 28 '17

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