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An optical trackpad is an input device based on an optical sensor, which detects the displacement of a finger that is moving on top of it. [1] The sensor is used typically in smartphones , where it replaces the D-pad , and in ultra-portable or ultra-mobile PCs , where it replaces touchpads , pointing sticks or trackballs as pointing device .
Logitech Cordless TrackMan Wheel trackball mose The original version of the Kensington Expert Mouse can use a standard American pool ball as a trackball. [citation needed]A trackball is a pointing device consisting of a ball held by a socket containing sensors to detect a rotation of the ball about two axes—like an upside-down ball mouse with an exposed protruding ball. [1]
The Apple Mouse (A1152) (formerly Mighty Mouse) is a multi-control USB mouse manufactured by Mitsumi Electric and sold by Apple Inc. It was announced and sold for the first time on August 2, 2005, and a Bluetooth version was available from 2006 to 2009.
Full charge can last 40 days. Able to connect to three separate devices. ... Wireless Trackball M570 T-R0001, M570, M570t: ... Advance Optical Tracking: 320 – 440:
The trackball was removable and could be placed on either side of the keyboard, or removed and a number pad installed in its place. [44] PowerBook The PowerBook line scaled down the trackball to be thumb-sized and included one in every portable from 1991 to 1995 when it was phased out in favor of the trackpad. [45] Pippin controller ("Apple Jack")
The claim that the advent of optical tracking in mice put trackballs at a disadvantage makes no sense, as trackballs acquired optical tracking before mice. The first optical mouse (using the modern definition) was released in 1999 by Microsoft. The Logitech Trackman Marble used optical tracking and was released in 1996 — around 3 years earlier.
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An optical mouse is a computer mouse which uses a light source, typically a light-emitting diode (LED), and a light detector, such as an array of photodiodes, to detect movement relative to a surface. Variations of the optical mouse have largely replaced the older mechanical mouse design, which uses moving parts to sense motion.
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