From then on, when anything went wrong with a computer, we said it had bugs in it.
Source: On the removal of a 2-inch-long moth from an experimental computer at Harvard in 1945; in Time, 16 Apr 84
-- Grace Murray Hopper, (Dec 9 1906-1992), US military leader, mathematician, educator; She was co- inventor of the computer language COBOL and coined the term bug.