harvard mark ii, a relay, and a moth: the bug story explained

bugscomputer-historyharvard-mark-ii3 replies · 79 views · started
  1. Today I learned the famous "first computer bug" was an actual moth. In 1947, operators of the Harvard Mark II computer found a moth stuck in a relay. They taped it into the logbook with the note "First actual case of bug being found."

    that logbook page is in the collection of the Smithsonian's National Museum of American History. but here's the twist: the joke works because engineers already called glitches "bugs". the word is much older, used in engineering since at least the 1800s. the moth just made it literal.

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  2. ok so the exact quote on the log is "First actual case of bug being found." The word "actual" only makes sense if "bug" was already in use.

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  3. ok so make a backup before u touch the update, learned that the hard way

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  4. I'd argue the story gets over-romanticized 🙏 it's a fun anecdote, but people present it as the origin of the term, which it isn't.

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