Editing Alps SKCC series (section)

==Description==
Conventionally, the pins are to the side of the switch instead of the front/back.<ref name="P700" /> Some keyboards have the switches rotated by 90° with the same pin orientation as SKCL/SKCM,<ref name="M011A" /> and at least one keyboard used mixed orientations.<ref name="IBM5954339" /> While the switch may appear rotationally symmetrical, and with a bit of force a cap can be pressed onto a switch in any orientation, the switch is not rotationally symmetrical. There are nubs on the sliders (the exact location of which can vary depending on the variant) that mate with indentations inside the keycap mount. Thus keyboards that have mixed orientation for their switches do not do so arbitrarily but rotate the switches to ensure that the nubs are properly aligned with the indentations inside the keycap mount. Plate mounting holes are 14 mm square.

The series dates back at least as far as 1979. Cream switches have been found in both a [[Radio Shack TRS-80 Model I]] and an [[Alps AKB-3420]] with ICs dating from 1979, and the grey switches have been found in a Monroe calculator with ICs dating from 1979.

The switch bears the oval Alps logo on the bottom.

===Specification===
The specifications for the [[Alps AKB-3420]] keyboard includes the switches, which are [[Alps SKCC Cream]]. The specification included with an older example of this keyboard from ca. 1979 gives the switch lifetime as 3×10⁶ cycles; while a later example from ca. 1988 gives a much higher rating of 2×10⁷ cycles. Bounce time is given as 5 ms in both cases, and full travel as 3.5±0.5 mm.