How does a USB keyboard work?

Name: How does a USB keyboard work?
Description: Ben Eater explains how a USB keyboard communicates, covering the electrical interface, bit and packet encoding, packet contents, and a comparison with PS/2.

Ben Eater

Ben Eater explains how a USB keyboard communicates, covering the electrical interface, bit and packet encoding, packet contents, and a comparison with PS/2.

HN commenters recommend it as a clear, comprehensive explanation of USB signaling and keyboard polling.

12 Hacker News mentions · 2021–2025

Topics

Electronics & circuit design
Embedded systems & DIY electronics
Computer architecture & CPUs

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