In 1994, a math professor unwittingly came across what would prove to be a costly headache for the chip giant Intel—a bug in the way that the floating point unit in Intel’s Pentium chip divides numbers.
The problem was seen in retrospect as perhaps a bit overblown—it was not a situation that most computer users would run into on a regular basis—but it still ended up costing Intel hundreds of millions of dollars.
The flaws recently revealed in popular lines of processors promise to affect users a lot more than that old floating-point bug, especially if they don’t upgrade their devices.
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