Editing Keyboard technology (section)

==== {{anchor|Dome-switch keyboard}} Rubber dome over membrane ====
[[File:Rubber dome over membrane, exploded.svg|thumb|center|Exploded view of a typical rubber dome over membrane design]]
Full-travel rubber dome over membrane keyboards are the most common keyboard design manufactured today. In these keyboards, a rubber dome sheet is placed above the membranes, ensuring that the domes align with the contact pads. The rubber dome serves a dual purpose: it acts as a tactile return spring and provides a soft surface to transfer force onto the top membrane. To bridge the connection between the two contact pads, the rubber dome must be fully depressed.

Rubber dome over membrane keyboards became very popular with computer manufacturers as they sought to reduce costs while PC prices declined.

===== Scissor-switch =====
{{See also|Chiclet keyboard}}
[[File:Scissor switch mechanism.svg|thumb|Scissor switch mechanism]]
A common, compact variant of rubber dome over membrane is the scissor-switch, based on the [[scissors mechanism]]. Due to the requirement of many notebooks to be slim, they require the keyboards to be low-profile. Therefore, this technology is most commonly featured on notebooks. The keys are attached to the keyboard via two plastic pieces that interlock in a "scissor"-like fashion and snap to the keyboard and the keycap. These keyboards are generally quiet and the keys require little force to press.

Scissor-switch keyboards are typically slightly more expensive. They are harder to clean (due to the limited movement of the keys and their multiple attachment points) but also less likely to get debris in them as the gaps between the keys are often smaller (as there is no need for extra room to allow for the 'wiggle' in the key, as typically found on a membrane keyboard).<ref>{{Citation |title=Keyboards |access-date=21 April 2009 |archive-url=https://web.archive.org/web/20120222204455/http://www.ergocanada.ca/ergo/keyboards/mechanical_vs_membrane_keyswitches.html |url-status=live |contribution=Mechanical vs membrane keyswitches |contribution-url=http://www.ergocanada.ca/ergo/keyboards/mechanical_vs_membrane_keyswitches.html |place=[[Canada|CA]] |publisher=Ergo |archive-date=22 February 2012}}.</ref>{{clear}}