Patent ID: 7428143

Claim:
A pen tablet computer configured for reception on the support arm of a user, comprising: a rectangular writing area having substantially parallel first and second sides A adjoined by substantially parallel first and second sides B; a housing coupled to said writing area having: a support arm engagement region adapted to rest on a user's support forearm with the intersection of first side A and first side B juxtaposed towards the user's support arm elbow; a hand engagement region adapted for receiving the hand of a user's support arm, wherein the hand engagement region is proximate to said second side A and closer to the intersection of second side A and second side B than to the intersection of second side A and first side B, and wherein the hand engagement region comprises: an indentation configured for receiving the thumbs; a finger area proximate to the indentation on one side of the hand engagement region, wherein the finger area includes one or more function buttons; and a palm receiving swell on the opposing side of the hand engagement region.