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ABS (damnit, DSC)
ABS is a simple system. It involves the monitoring of 3 or 4 sensors (front left wheel, front right wheel, and differential (or left and right rear axles). It's a binary system which uses a magnetic sensor (which can get confused by iron shavings) that detects the ridges and valleys on the hub of the front wheels or rearend/axles.
When the computer is receiving a steady stream of 10101010101, it applies braking force normally (ie, doesn't get involved)
When it receives 1111111111 or 000000000000 or whatever, it realizes that the wheel has stopped spinning (and is therefore skidding), and has to reduce the braking force to that wheel enough for it to stop skidding.
It seems like a complex system, but it's just an analysis of 3 or 4 inputs, done in a few thousandths of a seconds to make 3 or 4 sets of minute adjustments.
ABS is a VERY good thing.
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