How Did the Term “Bug” Originate in Programming?

In 1947, operators of one of the earliest computers, the Mark II at Harvard University, encountered an unexpected issue: a moth had become trapped in one of the machine’s relays, causing it to malfunction.

The operators removed the insect and taped it into the technical logbook, noting that a “bug” (referring to the moth) had been found. From that point on, the term “bug” became synonymous with errors or glitches in programs and systems, firmly embedding itself in the language of computer science.

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