Spherical (keycap shape)

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Provided by the ASK Keyboard Dictionary

Category: Keycap profiles & shapes Origin: Official

A keycap is "spherical" if its top has a sphere-shaped indent. IBM used spherical keycaps on its IBM Model D, Selectric I and Selectric II electric typewriters, IBM 029 and 129 family Card Punch Keyboards, IBM Elastic Diaphragm family keyboards, and IBM Model B family keyboards. In the wider, modern keyboard hobby, SA and DSA are examples of spherical-based keycap profiles. It's often used to contrast against cylindrical and simply flat keycaps.

Sources

ASK. Admiral Shark's Keyboards original content. License/note: CC BY-NC-SA 4.0.

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