The Engineering that Runs the Digital World 🛠️⚙️💻 How do CPUs Work?

The Engineering that Runs the Digital World 🛠️⚙️💻 How do CPUs Work?

C
Computer Science
1 Video View·Jan 6, 2026

How do Computers Work?
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Have you ever wondered how CPUs work? Well, in this video, we take a 3D animated tour of a Central Processing Unit and see exactly how it works. Central Processing Units, or CPUs, are incredibly complicated, and they practically run the modern world. CPUs can be found in every desktop computer, laptop, video game console, smartphone, and any other device you use on a daily basis. CPUs are built from tens of billions of transistors assembled into billions of logic gates, and essentially they're amazingly powerful calculators. But in reality, they're more like instruction-crunching and data-moving machines. All CPUs share a common DNA, which is the Fetch-Decode-Execute cycle. This cycle is both very powerful and a critical limitation of every CPU. So dive right in and we'll show you how CPUs work.