Patent ID: 7864949

Claim:
A physical keyboard comprising: a first user interface comprising a first array of keys arranged in rows and columns; and a second user interface comprising a second array of keys arranged in rows and columns and comprising a numeric phone keypad; the second array of keys only partially overlapping the first array of keys so that only a subset of the first array of keys also comprise a subset of the second array of keys and are therefore common keys common to both the first and second arrays of keys; the keys of the second array of keys physically differing from the keys of the first array of keys that are not common by being different in at least one of surface color and surface texture; the keys in at least one row of the second array of keys not being common keys and being offset above the first array of keys; and wherein the first array of keys comprises a text input keypad, and wherein the text input keypad includes a spacebar that is not a common key but is adjacent a row of keys of the second array of keys and extends across multiple columns of the second array of keys, and wherein the spacebar extends across all columns of a bottom row of the second array of keys.