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Megahertz, Gigahertz, Registers and Instructions: How does a CPU actually work? - Kendall Miller


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For decades, we’ve been creating ever higher abstractions between ourselves and the computing hardware we’re programming, but in the end whether you’re writing JavaScript, Haskell, or Python it all comes down to 1’s and 0’s running through hardware patterns that were well understood twenty years ago.
We’ll walk through the fundamentals of how CPUs “think” in an accessible way (no engineering degree required!) so you can appreciate the marvel that is the modern CPU, be it in a server data center or your fridge at home. You’ll learn how a CPU turns the code we feed it into actions, what’s the big difference between an ARM and an Intel processor, how CPUs constantly optimize work for us, and where is it all going for the next few years.