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Definition of "Magnetic Hysteresis Loop" |
See Hysteresis Loop. / When an external magnetic field is applied to a ferromagnet such as iron, the atomic dipoles align themselves with it. Even when the field is removed, part of the alignment will be retained: the material has become magnetized. Once magnetized, the magnet will stay magnetized indefinitely. To demagnetize it requires heat or a magnetic field in the opposite direction. This is the effect that provides the element of memory in a hard disk drive. / Very Large Scale Integration is the current level of computer microchip miniaturization and refers to microchips containing in the hundreds of thousands of transistors.large-scale integration meant microchips containing thousands of transistors. Earlier, medium-scale integration meant a microchip containing hundreds of transistors and small-scale integration meant transistors in the tens. |
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