Which groundbreaking feature did Texas Instruments first introduce in its TI-92 calculator in 1995, causing it to be banned from many standardized tests?

Texas Instruments revolutionized mathematics education in the 1990s with their groundbreaking graphing calculators. These devices transformed how students learned complex mathematical concepts by providing visual representations and programming capabilities. Today, despite smartphone apps and computer software alternatives, TI calculators remain dominant in classrooms worldwide. Test your knowledge about this iconic product line that bridges educational technology and mathematical learning tools.

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Computer Algebra System (CAS) that could solve symbolic equations
Built-in wireless internet connectivity for downloading additional math applications
Voice recognition software for hands-free equation solving
Artificial intelligence that provided step-by-step solutions to problems