Which mathematical product innovation, first released commercially in 1972, was initially banned from many standardized tests due to concerns about academic fairness?

Throughout history, mathematical tools have evolved dramatically, from ancient abacuses to modern computational devices. These innovations have revolutionized how we approach mathematical problems and education. This poll tests your knowledge about a significant breakthrough in mathematical product innovation that changed classroom dynamics and professional calculation methods worldwide.

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The scientific calculator (specifically the Hewlett-Packard HP-35)
The graphing calculator (Texas Instruments TI-30)
Digital geometry software (Geometer's Sketchpad)
Computer algebra systems (Mathematica)