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crwdns2933797:0Andrew Optimus Goldheartcrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Andrew Optimus Goldheart

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[* black] A single, elegant chip resides on the touchpad.
[* red] Broadcom BCM5976 Touch Controller (Part of the same series of Broadcom touch controller chips used in many Apple devices).
-[* black] The [https://en.wikipedia.org/wiki/Strain_gauge|strain gauges] mounted in the bracket are used to measure the force being applied in order to determine user input and the appropriate level of haptic feedback.
- [* icon_note] Force Touch works by measuring the resistance of the strain gauges which changes depending on the pressure being applied to the trackpad.
+[* black] These [https://en.wikipedia.org/wiki/Strain_gauge|strain gauges], mounted on the four spring tabs are used to measure the force applied to the trackpad surface.
+ [* icon_note] As you press down on the trackpad, the springs deflect, stretching the strain gauges and increasing their resistance. A microcontroller measures that resistance and determines the appropriate level of ~~haptic~~ Taptic feedback.