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The First Computer Bug Was an Actual Insect

In 1947, a team of engineers led by Grace Hopper were working on the Harvard Mark II computer when they found a moth stuck in one of the relays. The team taped the moth to the computer log with the note "First actual case of bug being found." This incident led to the term "bug" being used to describe technical glitches. The moth is now on display at the Smithsonian Institution's National Museum of American History.