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A Linotype machine keyboard. It has the following alphabet arrangement twice, once for lower case (the black keys) and once for upper case (the white keys), with the keys in the middle for numbers and symbols: etaoin / shrdlu / cmfwyp / vbgkqj / xz Close-up of keyboard, showing "etaoin / shrdlu" pattern
The QWERTY keyboard introduced on the Sholes & Glidden typewriter in 1874 was designed for purely mechanical reasons and the chances of the keys striking each other and jamming was more limited with this configuration. Because the Blickensderfer used the typewheel, the "scientific" keyboard layout could be used for maximum typing efficiency. [2]
Mechanical keyboards (or mechanical-switch keyboards) are computer keyboards which have an individual switch for each key. The following table is a compilation list of mechanical keyboard models, brands, and series:
Keyboard key legends must be extremely durable over tens of millions of depressions, since they are subjected to extreme mechanical wear from fingers and fingernails, and subject to hand oils and creams, so engraving and filling key legends with paint, as was done previously for individual switches, was never acceptable.
An updated version of the G710+, now with Cherry MX Blue switch keys. G910 "Orion Spark" 2014: Logitech Romer-G: Wired — Yes: 9×3 27: RGB per key: Logitech's first proprietary mechanical key switch keyboard, with custom Omron "Romer-G" switch keys and individual RGB backlight color per key. G410 "Atlas Spectrum" 2015: Logitech Romer-G: Wired —
The Kinesis Advantage keyboard. Kinesis is a company based near Seattle that offers computer keyboards with ergonomic designs as alternatives to the traditional keyboard design. Most widely known among these are the contoured Advantage line, which features recessed keys in two bucket-like hollows to allow the user's fingers to reach keys with ...