28. The device of claim 24 wherein the first electrodes are disposed on the interior surface of the upper substrate and the second electrodes are disposed on the interior surface of the lower substrate, so as to provide a passive matrix addressed display.
24. The new device of claim 15 wherein the display means comprises: an upper substrate consisting of a translucent material, the upper substrate having an exterior surface and an interior surface, the input pen means being configured to be manipulated by the user proximate the upper substrate; a lower substrate spaced from the upper substrate, the lower substrate having an exterior surface and an interior surface; a plurality of first electrodes; a plurality of second electrodes, the second electrodes intersecting the first electrodes; electro-optic material within an interstitial region between the upper and lower substrates; and spacing means disposed between the interior surface of the upper substrate and the interior surface of the lower substrate for preventing relative movement between the upper and lower substrates in response to contact by the input pen means against the exterior surface of the upper substrate, so as to prevent display distortion; and wherein the pen sense control means is connected to the first and second electrodes and the input pen means and responsive to electrical coupling of the first and second electrodes with the input pen means for producing position signals correlated to positions of the input pen means with respect to crosspoints corresponding to intersections of the first and second electrodes as the user manipulates the input pen means; and wherein the display control means is connected to the first and second electrodes and responsive to the position signals for energizing the electro-optic material in the vicinity of corresponding crosspoints.