Which calculator brand first introduced transparent packaging specifically designed to showcase the calculator's solar panel functionality, revolutionizing how scientific calculators were marketed in schools?

In the world of mathematics education and professional tools, calculator brands have transformed how we approach complex calculations. Their marketing strategies, packaging innovations, and brand loyalty have evolved significantly over decades. This poll tests your knowledge about a pivotal moment in calculator brand history that changed how these mathematical tools were marketed and perceived in educational settings. Can you identify which innovative packaging approach revolutionized the calculator market?

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Casio, with their 'See-Through Solar' packaging for the fx-115 series in 1992
Texas Instruments, with their 'Clear View Technology' packaging for the TI-30 series in 1989
HP, with their 'Visible Power' display boxes for the HP-35S in 1994
Sharp, with their 'EcoVision' packaging for the EL-531 series in 1991