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The First Computer Bug Was an Actual Insect

In 1947, a team of engineers working on the Harvard Mark II computer found a moth stuck in a relay switch, causing the system to malfunction. This incident led to the term "bug" being coined to describe any technical glitch. The moth was taped into the computer's logbook with the note "First actual case of bug being found." This event was documented by the team and is still referenced today as the origin of the term "bug" in computing.