Importance

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Abstract

A prioritizing input device such as a keyboard (10) having a base (12) and a number of single column arrays (20) of individually actuable momentary keys (24). Within each array (20), the keys (24) are closely-packed together and are prioritized so that the user need not avoid simultaneously depressing multiple keys; rather, selection of a particular key requires only that the user avoid depressing a key that is higher priority than the desired key. The keyboard (10) can be used as a numeric input device such that each key (24) within an array (20) is assigned to a different digit. Priority among the keys (24) within each array (20) can be assigned in ascending numerical order so that pressing multiple keys will result in the numerically largest selected digit being recognized as the valid keypress. This permits the keys (24) within an array (20) to be small and closely packed together so that they are all accessible within the range of motion of an average user's finger. By providing an array on the keyboard for each finger, multi-digit numbers can be entered in a single operation by chording of the different arrays.

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First Claim