xkcd: Circuit Symbols
Express Yourself in Schematics - Have Fun with Symbols and Notes - Circuit Artists
Structure+Strangeness: March 2007 Archives
Sage Academic Books - Mathematics Formative Assessment, Volume 2: 50 More Practical Strategies for Linking Assessment, Instruction, and Learning
writing – Gretchen McCulloch
xkcd: Universal Converter Box
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xkcd: Circuit Diagram
xkcd: Logic Gates
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xkcd sucks: Comic 775: Psyche!
Boosts - xkcd #2818: Circuit Symbols
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xkcd-listener/xkcd.csv at master · ig248/xkcd-listener · GitHub