Texas Instruments TI-89 - BIOS (TOSEC-v2006-04-21)

"The TI-89 and the TI-89 Titanium are graphing calculators developed by Texas Instruments. They are differentiated from other graphing calculators by their powerful computer algebra system, which allows symbolic manipulation of algebraic expressions. For example, equations can be solved in terms of variables; most other calculators can only give a numeric result.

In the United States, the TI-89 is allowed by the College Board on all calculator-permitted tests, including the SAT, some SAT Subject Tests and the AP Calculus, Chemistry, Physics, and Statistics exams. However, the calculator is banned from use on the ACT, the PLAN, and in some classrooms. In many testing situations, the TI-89 and TI-89 Titanium, along with the HP-49 series, are the most powerful and function-rich graphing calculators that are permitted: the TI-92 series, with otherwise comparable features, have QWERTY keyboards that cause them to be considered small computers." (Wikipedia)

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