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So how does a PS/2 keyboard interface work?

Ben Eater · tutorial · Watch on YouTube

Electronics & circuit designEmbedded systems & DIY electronics

What it is

Ben Eater explains how the PS/2 keyboard interface works, covering its clocked serial protocol and scancodes. He builds up the hardware-level understanding needed to read keypresses.

Why Hacker News recommends it

HN commenters point to it as the clearest explanation of the PS/2 protocol, usually when keyboard interfaces come up.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2021, last 2021

What HN commenters said

  1. “There's a good video on how PS/2 works here”

    Explains how the PS/2 protocol works

    zackbloom, 2021-04 · Recommendation · in “The last generation of typewriter repairmen (2010)”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: ps/2, scancodes, serial protocol, hardware, ben eater

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