Amiga keyboards. A500 on top, A1200 bottom. Apart from the circuit-board top right and different connectors, the keyboards themselves are identical in layout…
Amiga A500 keyboard with a bunch of keys removed.
The rather complex under-side of the Enter key on an Amiga 500 keyboard.
On Amiga 500 and 1200 (and probably some other models) there is a spring under each key cap.
The bigger keys have a little more complex mechanism holding them in place compared to the smaller keys.
This is what it looks like under the Caps Lock key of an Amiga 500.
The curcuit-board on an Amiga 500 keyboard. On an A1200 keyboard, this circuit-board is mssing, leaving a hole.