Which groundbreaking Texas Instruments calculator, released in 1990, became a classroom standard and continues to sell millions of units annually despite minimal design changes?

Texas Instruments has dominated the graphing calculator market for decades, becoming synonymous with mathematics education. Their products have shaped how students learn and engage with mathematical concepts while creating a unique business model in educational technology. Test your knowledge about this iconic product line that has remained remarkably consistent despite technological advances around it.

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TI-83
TI-92
TI-89
TI-82