A stylus computer input device that includes an input mechanism that is secured to the finger tip pad of a user’s index finger. The exchangeable extension link has a first connecting end removably linked to the handle, and a second connecting end defining a sectioned cavity. The wire sections extend essentially radially and are cohesive with one another at their inner radial ends at a wire linkage area. Then effective parameters for driving effective devices in the pixel circuit are extracted, based on the translated values, and stored for use in compensating input signals to the pixel circuit. The floating gate structure includes a first bottom dielectric layer, a second bottom dielectric layer on the first bottom dielectric layer and a conductive floating gate on the second bottom dielectric layer.