The Fetch-Execute Cycle: What's Your Computer Actually Doing?

The fetch-execute cycle is the basis of everything your computer or phone does. This is literally The Basics. • Sponsored by Dashlane —try 30 days for free at:

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In the graphics, “programme” should be “program”.
I say “Mac instead of PC”; that should be “a phone instead of a PC”.
And most importantly, I say “every sixth cycle”: that should be “every ninth”.
Fortunately, none of these materially affect the content of the video!

Written with Sean Elliott
Directed by Tomek
Graphics by Mooviemakers
Audio mix by Haerther Productions

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and on Instagram as tomscottgo


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This Post Has 22 Comments

  1. I got lecture for 1 and 1/2 hr for this topic (Computer Organization and Architecture) Simple As Possible -1 , I only understand a little from it. This video helps alot. This video should be shown to people who is curently learning COA for easier understanding. Great video!

  2. I have been following you for years, watching your videos about everything from cool stories about geography, games… Last year I started studying computer science, and tomorrow I have a test on computer structure. I had no clue on the fetch decode execute cycle, and was desperately looking for something on youtube (as one does). I saw your face and was inmediately relieved, as your narrating skills would make me get it instantly. You have saved a fellow computer scientist my friend.

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