Patent Document ID: 4447213
Application ID: 05843017
Patent Flag: 1

Claim One:
1. An electronic learning aid comprising: problem posing means for posing a sequence of arithmetic problems to an operator of the learning aid; display means operably associated with said problem posing means for visually presenting to an operator of the learning aid problems posed by said problem posing means, said display means including a plurality of individually actuatable segments visually observable when actuated, some of said plurality of segments being arranged in a generally circular configuration and others of said plurality of segments being arranged to display numeric characters; operator input means for receiving an input from an operator of the learning aid as an entered solution by the operator to the problem being posed as displayed by said display means; comparison means for comparing an entered solution to a posed arithmetic problem in said sequence with the correct solution to the problem being posed; elasped time measuring means coupled to said problem posing means and said comparison means for measuring elapsed times between the time the first problem in said sequence is posed until the time the last problem in said sequence is solved, said elapsed time measuring means including a register for storing a number indicative of the elapsed time; an arithmetic unit associated with said problem posing means, said comparison means and said elapsed time measuring means for calculating the correct solutions to the problems posed and for periodically incrementing the number stored in said register of said elapsed time measuring means; result means coupled to said display means, said comparison means and said elapsed time measuring means for providing outputs indicative of the correctness of the entered solutions of said sequence of problems posed and the elapsed time measured by said elapsed time measuring means, said display means being responsive to the outputs of said result means for displaying to the operator an indication of the correctness of the entered solutions of said sequence of problems posed and an indication of the elapsed time measured by said elapsed time measuring means; and said segments of said display means arranged in said generally circular configuration being sequentially actuated around the circumference of said circular configuration by said elapsed time measuring means wherever said problem posing means poses a sequence of problems at said display means, and said other segments arranged to display numeric characters being selectively actuatable in response to said elapsed time measuring means to display numeric characters indicative of the total elapsed time measured by said elapsed time measuring means.