Photo #: NH 96566-KN (Color)
The First "Computer Bug"
Moth found trapped between points at Relay # 70, Panel F, of
the Mark II Aiken Relay Calculator while it was being tested
at Harvard University, 9 September 1945. The operators affixed
the moth to the computer log, with the entry: "First actual
case of bug being found". They put out the word that they
had "debugged" the machine, thus introducing the term
"debugging a computer program".
In 1988, the log, with the moth still taped by the entry, was
in the Naval Surface Warfare Center Computer Museum at Dahlgren,
Virginia.
Courtesy of the Naval Surface Warfare Center, Dahlgren, VA.,
1988.
U.S. Naval Historical Center Photograph.
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