On Sept. 9, 1947 – Lt. Grace Hopper is part of a team that finds a moth that is bugging up the Mark II Aiken Relay Calculator at Harvard. After debugging the system, the moth is affixed to the computer log, where Hopper notes: "First actual case of bug being found." Lt. Hopper later attains the rank of rear admiral.
In 1988, the log, with the moth still taped by the entry, was found in the Naval Surface Warfare Center Computer Museum at Dahlgren, Virginia.
To learn more about U.S. Navy history, please go to the Naval History and Heritage Command website: www.history.navy.mil/ or visit the NHHC blog The Sextant.