The Casio SK-1 keyboard is fairly well-known in the “circuit bending” scene, where its simple internals lend themselves to modifications and tweaks to adjust the device’s output in all sorts ...

[Frank Adams] liked the keyboard on his Lenovo ThinkPad T61 so ... They generally use a flexible printed circuit (FPC) “ribbon cable” of some type, but may also be terminated in any number ...

(1) Most QWERTY computer keyboards use a single rubber-like membrane underneath the keys that makes contact with a circuit board when the key is fully depressed. Also called a "dome switch ...