The Amp Hour Electronics Podcast

Chris Gammell and Dave Jones' voices span the chasm of thousands of miles each and every week to speak to each other and industry experts about where the field of electronics is moving. Whether it be a late breaking story about a large semiconductor manufacturer, a new piece of must-have test equipment or just talking through recent issues with their circuit designs, Chris and Dave try to make electronics more accessible for the listeners. Most importantly, they try and make the field of electronics more fun. Guests range from advanced hobbyists working on exciting new projects up through C-level executives at a variety of relevant and innovative companies. Tune in to learn more about electronics and then join the conversation! Visit The Amp Hour website for our back catalog of 150+ episodes.

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#444 – An Interview with Ben Eater


Welcome, Ben Eater! You may know Ben from his YouTube videos showing how to build a breadboard 8 bit computer

  • Ben’s background is in software/networking
    • 0h 0m 33s
  • He has been an electronics hobbyist for a long time
    • 0h 1m 21s
  • Digital electronics – Albert Paul Malvino
    • 0h 3m 0s
  • The 8 bit computer started for a hackathon
    • 0h 3m 54s
  • Bottom up learning
    • 0h 12m 59s
  • We depend upon abstractions
    • 0h 15m 19s
  • We have leaky abstractions
    • 0h 15m 36s
  • Micro instruction
    • 0h 17m 54s
  • 16B of memory
    • 0h 18m 25s
  • Instruction or data
    • 0h 18m 33s
  • Program with dip switches
    • 0h 18m 41s
  • Program in and then switch into run mode
    • 0h 19m 17s
  • 4 registers
    • 0h 21m 37s
  • ALU
    • 0h 23m 24s
  • Output register
    • 0h 23m 26s
  • Can go a couple hundred hertz
    • 0h 24m 26s
  • Instructions and microinstructions
    • 0h 25m 50s
  • Combinationatorial logic circuit
    • 0h 28m 0s
  • Control word
    • 0h 28m 7s
  • Assembly programming and register model
    • 0h 32m 46s
  • Optimizations
    • 0h 33m 39s
  • every instruction takes 6 clock cycles
    • 0h 34m 24s
  • What does the community look like?
    • 0h 35m 6s
  • 14 breadboards
    • 0h 36m 5s
  • Accessibility
    • 0h 36m 55s
  • Using TTL logic chips
    • 0h 37m 30s
  • Can stick an LED on an LS output
    • 0h 37m 47s
  • The community is mostly on the subreddit /r/beneater
    • 0h 39m 37s
  • Ben is now selling a kit
    • 0h 39m 43sTTL
  • Comes with the LS chips
    • 0h 41m 1s
  • Seeing how people struggle
    • 0h 44m 21s
  • microcosm of the education system
    • 0h 45m 44s
  • Extrinsic motivation
    • 0h 47m 43s
  • Dopamine loops
    • 0h 48m 7s
  • Ben previously worked at Khan Academy (KA)
    • 0h 48m 35s
  • In his student days he didn’t like math
    • 0h 50m 48s
  • Stumbled on a bug when checking out KA.
    • 0h 51m 44s
  • Volunteered time to KA.
    • 0h 52m 3s
  • Hired on in 2011
    • 0h 55m 19s
  • They are a non-profit tech company
    • 0h 57m 37s
  • Taught classes in the networking space
    • 0h 59m 7s
  • Books on education
    • 1h 1m 16s
  • Mindstorms by Seymour Papert
    • 1h 1m 45s
  • Logo programming language
    • 1h 2m 31s
  • Turtle
    • 1h 2m 49s
  • Mindset by Carol Dweck
      • 1h 6m 4s
  • Growth Mindset vs Fixed Mindset
    • 1h 6m 34s
  • Metacognition at Khan
    • 1h 8m 6s
  • Game designers have figured this out
    • 1h 9m 8s
  • Mario level 1
    • 1h 9m 28s
  • RSA animate of Dan Pink
    • 1h 13m 33s
  • Mastery Autonomy Purpose
    • 1h 15m 15s
  • Making more videos, there is a newer one about CRCs
    • 1h 19m 28s
  • Find Ben on Reddit, YouTube, or Twitter
    • 1h 20m 38s


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 May 28, 2019  1h17m