Apple first announced the iPhone 4's gyroscope at WWDC 2010, but it was largely overshadowed by other big players inside the phone -- the A4 processor, Retina display, and external antennas. A lot of technology gets stuffed into vibrational gyroscopes (the type found in the iPhone 4), yet a casual observer may barely notice the chip itself, let alone the phenomenal contents within it. iFixit and Chipworks have partnered to show you exactly what's inside these little gems:
According to
Wikipedia's definition, "A gyroscope is a device for measuring or maintaining orientation, based on the principles of conservation of angular momentum." The key phrase is
measuring or maintaining orientation, which is the exact reason an iPhone 4 contains one of these gizmos.
http://www.ifixit.com/Teardown/iPhone-4-Gyroscope-Teardown/3156/1
http://www.chipworks.com/iPhone-4-teardown.aspx
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