Stabilization techniques for key assemblies and keyboards

A keyboard, comprising:

• a plurality of keycaps each having a touch surface for receiving a press force that moves a pressed keycap from an unpressed position toward a pressed position, the unpressed position and pressed position separated in a press direction and a second direction orthogonal to the press direction;
• a base having a plurality of planar-translation effecting mechanisms each supporting a respective one of the plurality of keycaps to guide the pressed keycap in the press direction and the second direction as the pressed keycap moves from the unpressed position toward the pressed position;
• and
• a plurality of key stabilization mechanisms positioned in the respective keycap, the base or both the respective keycap and the base configured to the stabilize the pressed keycap so that the touch surface remains substantially planar while the pressed keycap moves from the unpressed position toward the press position;
• wherein the key stabilization mechanism resists tilt of the pressed keycap and rotation of the pressed keycap about an axis in the press direction as pressed keycap moves toward the pressed position.