Observed arrival · 2026-09-30

One Line of C, Ten Layers Down

computerinternals.app Visit website

Editorial interest 88/100 Selection signal · not a rating of the site

An interactive textbook follows computer code from familiar applications down through assembly, CPU operations, logic gates, and transistors.

Landing page captured for the 2026-09-30 issue.

For: Readers learning C, assembly, and computer organization
Worth noticing: The simulator exposes RIP, general-purpose registers, RFLAGS, labeled stack frames, and address, data, and control buses.

Field notes

The curriculum is presented in English and French, with 24 runnable examples. Its sample program sets two integers, adds them, and tests the result; the interface pairs source with generated assembly and displays named stack entries, flag changes, and memory-bus activity. The simulator controls include step-over and continue, and the site describes the experience as browser-based with no installs or sign-ups.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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