Which calculator company's TI-83 series became so dominant in US mathematics education that it achieved over 80% market share in graphing calculators, creating a rare 'product monopoly' in educational tools?

In the world of mathematics education and professional computation, certain products have fundamentally changed how we approach numerical problems. This trivia question explores the brand storytelling behind one of the most influential calculator product lines that revolutionized mathematics education in schools and universities worldwide. Test your knowledge about this iconic mathematics retail success story!

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Texas Instruments
Casio
Hewlett-Packard (HP)
Sharp