Which company's market research led to the revolutionary design decision to use Reverse Polish Notation (RPN) in their scientific calculators, creating a distinctive product positioning in the mathematics market?

The handheld calculator transformed mathematics education and professional work, making complex calculations accessible to everyone. But behind this revolutionary product lies an interesting story of design innovation, market research, and competitive positioning. Test your knowledge about one of the most impactful mathematical tools ever created!

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Hewlett-Packard (HP)
Texas Instruments (TI)
Casio
Sharp