crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2918746:0crwdne2918746:0

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crwdns2933797:0Sam Goldheartcrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Sam 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] 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.
+[* black] The [https://en.wikipedia.org/wiki/Strain_gauge|strain gauges], mounted on each of 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 to deliver.