Which calculator company's marketing campaign featured the slogan 'The Power to Transform Teaching & Learning' and revolutionized classroom technology adoption in the 1990s?

The intersection of mathematics and marketing has created some fascinating brand strategies and campaigns. Companies that sell mathematical tools, educational software, and learning materials often employ unique marketing approaches to stand out in this specialized field. This trivia question tests your knowledge about a famous marketing campaign that revolutionized how mathematical tools were promoted to students and educators.

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Texas Instruments with their TI-83/84 series
Casio with their fx-CG50 graphing calculators
HP with their Prime graphing calculator line
Sharp with their EL-W535 scientific calculators