9th September 1945
Grace Hopper recorded the first actual computer "bug"
On September 9th, Grace Hopper recorded the first actual computer "bug" — a moth stuck between the relays and logged at 15:45 hours on the Harvard Mark II. Hopper, a rear admiral in the U.S. Navy, enjoyed successful careers in academia, business, and the military while making history in the computer field. She helped program the Harvard Mark I and II and developed the first compiler, A-0. Her subsequent work on programming languages led to COBOL, a language specified to operate on machines of different manufacturers.
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