Which of these calculators was the first to use Reverse Polish Notation (RPN) in its product design, revolutionizing how complex calculations were performed?

Test your knowledge about the revolutionary product design that transformed mathematics education in the 1970s and continues to impact how we teach and learn computational thinking today. This device fundamentally changed how students interacted with mathematical concepts and paved the way for modern educational technology.

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• Hewlett-Packard HP-35 (1972)
• Texas Instruments TI-30 (1976)
• Casio fx-7000G (1985)
• Sharp EL-500 (1969)

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