More from Amazon.com : http://www.amazon.com/gp/product/B0006HBQ96?tag=purrfectcatdi-20 <br /> <br />Texas Instruments TI-89 Titanium Graphing Calculator <br /> <br />Amortization - Yes - Switch Key - No <br />Backspace Key - Yes <br />Base Number Calculations - Yes <br />Bond Calculations - No
