Patent ID: 7472146
Filing Date: 2008-12-30
Classification: G06F

Abstract:
1. A portable hand-held device comprising: a hand-holdable housing; a memory unit disposed within the housing, the memory unit having a single pre-defined non-linear algorithm, the algorithm including a pre-defined range of output values and at least two pre-defined variables, each of which have a range of pre-defined numerical input values assignable thereto; an input means disposed on the housing and electrically connected to the memory unit, the input means being configured for assigning the input values to each of the respective at least two variables; a processing unit disposed within the housing, the processing unit being electrically connected to the memory unit and the input means, the processing unit being configured to produce the output values by receiving the input values assigned to the at least two variables, and applying the algorithm to the received input values; a countdown timer disposed within the housing for counting a predetermined time interval while the processing unit is active and for producing countdown signals, the countdown timer being selectable via the input means; and an output means disposed on the housing and electrically connected to the processing unit and the countdown timer for outputting the output values and the countdown signals, wherein the processing unit and countdown timer are each configured to simultaneously produce output values and countdown signals respectively during the operation of the other without interruption thereof.