A similar non-OS example - early versions of the Patriot missile had to be rebooted every 8 hours or less because their clocks built up rounding errors over tim

A similar non-OS example - early versions of the Patriot missile had to be rebooted every 8 hours or less because their clocks built up rounding errors over time. http://sydney.edu.au/engineering/it/~alum/patriot_bug.html http://sydney.edu.au/engineering/it/~alum/patriot_bug.html