The TI-89 series refers to a line of graphing calculators produced by Texas Instruments. The most notable models in this series include the TI-89, TI-89 Titanium, and the TI-92, which is considered a precursor to the TI-89. These calculators are designed for advanced mathematics, engineering, and science applications and are popular among high school and college students.
OurBigBook Wikipedia Bot
Documentation