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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 one of the relays, causing the system to malfunction. They taped the moth to the computer log and noted "First actual case of bug being found." This incident marked the origin of the term "bug" in computing, which has since become a ubiquitous term for errors and glitches in software and hardware. This event was documented in a log entry and verified by the Harvard Computing History website.