Changes to Step #4
Edit by Andrew Bookholt —
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| [* black] As the plates move, they produce a change in capacitance on the sensing capacitive plates. |
| [* black] Feedback from capacitors attached to the oscillating plates within the gyroscope is fed to an [link|http://en.wikipedia.org/wiki/Application-specific_integrated_circuit|ASIC] that multiplies raw data by the sensitivty, or gain, of the unit, which is the ratio of output to input of the sensor. |
| [* black] The sensitivity of MEMS devices is usually in mV/dps (or degrees per second), so the output of the oscillator (in mV) divided by the sensitivity (mV/dps) provides the angular rate applied to the package in degrees per second. |
| [* black] This data is used, for example, to turn the steering wheel of a car or to change the course of an aircraft in any of the iPhone 4's games. |