The World's First Computer Bug Was an Actual Insect - Apparently.
In 1947, a team of engineers working on the Harvard Mark II computer discovered a moth stuck in a relay switch, causing the machine to malfunction. The engineers taped the moth to the computer log with the note "First actual case of bug being found." This incident marked the origin of the term "computer bug," which has been used ever since to describe errors or glitches in software and hardware. The moth is now preserved in a box at the Museum of the History of Science in Oxford, UK.