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“A while back, when I was tinkering around with a PS/2 touchpad with an Arduino microcontroller, I found out that two of its onboard connections can be used as digital inputs. In this Instructable, let’s learn how we …
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A touchpad or trackpad is a pointing device featuring a tactile sensor, a specialized surface that can translate the motion and position of a user's fingers to a relative position on the operating system that is made output to the screen. Touchpads are a common feature of laptop computers as opposed to using a mouse on a desktop, and are also used as a substitute for a mouse where desk space is scarce. Because they vary in size, they can also be found on personal digital assistants (PDAs) and some portable media players. Wireless touchpads are also available as detached accessories.