The Texas Instruments TI-89 Titanium Graphing Calculator is a handheld device with a regular key size and display size. It is powered by batteries and features an LCD display, USB connectivity, backlight, calculus functions, a clock, and programmability. This model is designed for office and business use, offering a range of mathematical capabilities and user-friendly functions. The hard cover provides protection for the device, making it durable for everyday use.
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