Quality Control
A study of the visual inspection of small integrated circuits found that the modal duration of eye fixations of trained inspectors was about 200 msec. The most accurate inspectors made the fewest eye fixations and were the fastest. When the same chip was judged more than once by an individual inspector the consistency of judgment was very high whereas the consistency between inspectors was somewhat less. Variation by a factor of six in inspection speed led to variation of less than a factor of two in inspection accuracy. Visual inspection had a false positive rate of 2% and a false negative rate of 23%
Read more about this topic: Visual Inspection
Famous quotes containing the words quality and/or control:
“Candor is a proof of both a just frame of mind, and of a good tone of breeding. It is a quality that belongs equally to the honest man and to the gentleman.”
—James Fenimore Cooper (1789–1851)
“Our culture still holds mothers almost exclusively responsible when things go wrong with the kids. Sensing this ultimate accountability, women are understandably reluctant to give up control or veto power. If the finger of blame was eventually going to point in your direction, wouldn’t you be?”
—Ron Taffel (20th century)