Electrical Engineering
Ken Shirriff's user avatar
Ken Shirriff's user avatar
Ken Shirriff's user avatar
Ken Shirriff
  • Member for 11 years, 6 months
  • Last seen this week
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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
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All Questions Answers
Score Newest
answer
23
Can you help me identify this manufacturer's logo on this component
Jan 2, 2022
answer
16
does 8085 CPU have an extra register within ALU?
Mar 23, 2017
answer
14
How can I duplicate Apple's tiny USB power adapter?
May 19, 2012
question
8
Why the extra transistors in this current mirror?
Mar 15, 2017
question
8
What's this half-arrow diode symbol on a schematic?
May 21
answer
7
history of edge-triggered D flip-flop design using three S-R latches
Aug 8, 2019
question
7
How to understand a complex diode-resistor function generator circuit?
Aug 10, 2021
answer
7
What is the reasoning for the arithmetic functions on the 74181?
Jan 6, 2017
question
6
Is there an intuitive explanation of the classic edge-triggered flip flop circuit?
Dec 30, 2019
answer
6
What is the name of the current that creates the potential difference in an opamp?
Mar 27, 2017
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
Could the museum Saturn V's be refitted for one more flight?

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