What is Touchpad?
{{unsourced|date=March 2018}} [[File:Compaq touch pad.jpg|thumb|300px|The touchpad, a big space for the finger to scroll and two buttons for left and right clicking]] A '''touchpad''' (also called a '''trackpad''') is a type of [[input device]] for [[computer]]s that does the same things as a [[computer mouse]]. It is made up of a flat, [[touch]]-sensitive [[surface]] which the user [[wikt:slide|slides]] one or more [[finger]]s on to move the [[cursor]] on the [[Computer monitor|screen]]. Next to the touchpad are [[push-button]]s that work just like mouse buttons, including left-clicking and right-clicking. In some newer touchpads, there are no actual buttons, and clicking is done by pushing near the button of the touchpad itself. Unlike computer mice, touchpads stay in one place when they are being used. This makes it easy to build them into [[Computer hardware|hardware]]. They are mostly found on [[laptop]] computers because, when the user is traveling, sometimes they cannot use a mouse. However, most laptops do allow the user to connect a separate mouse. Besides laptops, touchpads are also more and more used on [[mobile device]]s with a [[Graphical user interfaces and consoles|GUI]], including [[MP3 player]]s (a well-known one being the [[iPod]]) and [[mobile phone]]s (such as the [[BlackBerry]]). However, touchpads on today's mobile devices such as [[smartphone]]s and [[tablet computer]]s have been replaced with the [[touchscreen]], which is used much like a touchpad, except the screen is built into the touch-sensitive surface itself so that no mouse cursor is needed. One can just touch anywhere on the surface to choose what is on the screen at that part. Most touchpads have the function of tapping, which imitates the left-click button on a mouse. New models of touchpads often do more things because they can respond to the [[pressure]] of more than one finger. This is called [[multi-touch]] and makes it possible to do things like [[wikt:scroll|scroll]] though, [[wikt:zoom|zoom]] in and out, and [[wikt:rotat