The Texas Instruments TI-89 Titanium Advanced Graphing Calculator is a handheld device that offers a range of advanced features for mathematical and graphing tasks. With a regular-sized LCD display, this calculator is powered by batteries and includes features such as a backlight, USB connectivity, calculus functions, a clock, and programmable functionality. Designed for business, industrial, and office use, this Texas Instruments model provides a reliable and efficient tool for complex calculations and graphing needs. The included cover ensures protection and security while on the go. Inside flap of cover has writing on it. See pictures for more details.
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