Which calculator product launch revolutionized the mathematics retail market in the 1970s by positioning advanced computing power as accessible to everyday consumers?

The retail landscape for mathematical tools has evolved dramatically over centuries. From ancient counting devices to modern digital solutions, the way we sell, market, and position mathematical instruments reflects both technological advancement and changing educational approaches. This poll tests your knowledge of a pivotal product launch that transformed how mathematics tools were positioned and marketed to consumers.

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Texas Instruments TI-30 (1976), marketed as 'The Little Professor' with a price point under $25 when most scientific calculators cost over $100
Hewlett-Packard HP-35 (1972), marketed exclusively to engineering professionals with a luxury price point of $395
Casio fx-7000G (1985), the first graphing calculator, targeted only at university mathematics departments
Sharp EL-8 (1969), the first calculator using LSI circuits, marketed to corporate accounting departments for $495