Digitor Learning Arithmetic Module

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Year: 1975


Manufacturer: Centurion Industries Incorporated

Designer: Jerome C. Meyer / William R. Hafel

Dimensions: 25 cm x 19.8 cm x 19.8 cm | 9 27/32 in x 7 25/32 in x 7 25/32 in


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Jerome C. Meyer and later William R. Hafel created the digitor to introduce a new format for learning – randomly generated problems. They believed this would be more efficient that trying to arrange a specific order of math problems. The digitor was powered with an Intel microchip to help power its basic arithmetic functions.

Centurion Industries Incorporated operated out of Redwood City, California from 1975-1996.

Learn more at the National Museum of American History