Uploaded June 2025 | Updated September 2026, 3 weeks ago

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We're looking at how the CPU deals with the 'outside world' as Matt Godbolt continues his low-level tour of the computer!

Find out more about Matt from his blog: bit.ly/C_MGodbolt

Computerphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: jane-st.co/computerphile

This video was filmed and edited by Sean Riley.

Computerphile is a sister project to Brady Haran's Numberphile. More at bradyharanblog.com