User input systems are provided having a core extending along a length and an input sleeve having an exterior surface and an interior surface shaped and sized to receive the core. A slide sensing system has a slide sensor that senses sliding movement of the input sleeve relative to the core and that causes a slide signal to be generated that indicates at least that the input sleeve has been moved along the length of the core and a direction of such movement. A rotation sensing system has a rotation sensor that senses rotational movement of the input sleeve relative to the core and that causes a rotation signal to be generated that indicates at least that the input sleeve has been rotated relative to the core. A processing system determines an output signal based upon the slide signal and rotation signal.
