Which groundbreaking calculator, released in 1972, was the first to use Reverse Polish Notation (RPN) and became iconic in mathematics and engineering fields?

The intersection of mathematics and product design has led to revolutionary tools that transformed how students and professionals approach mathematical problems. From basic calculators to sophisticated computational software, these innovations have shaped mathematical education and research. Test your knowledge about a pivotal moment in mathematical product design history!

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HP-35
TI-30
Casio fx-7000G
Sharp EL-500