The TI-89 Titanium is a powerful and expandable graphing calculator used by students and professionals in advanced mathematics and science fields. The TI-89 offers a long and complex list of features, but you can familiarize yourself with the device by getting to know the user interface.
Instructions
1. Power on the calculator by pressing the "ON" button. If this is the first time you've powered on the calculator, the device will need to install its software. A progress bar will indicate when the install is complete. You should now see the main screen.
2. Perform basic arithmetic using the "+," "-," "x," "division" and "Enter" buttons, all placed in a row on the right side of the TI-89's button panel. The "Enter" key is the equivalent of the "=" key on a more basic calculator.
3. Explore the secondary functions by pressing the "2nd" key in the top left of the button panel. Nearly every button on the TI-89 has a secondary feature. You can think of the "2nd" key as similar to a shift key on a computer. Press the "2nd" and the next button you press will execute the secondary function listed above the button rather than the primary function listed on the button.
4. Power off the calculator by pressing the "2nd" key followed by the "On" button. "Off" is the secondary function of the "On" button, so as described in Step 3, pressing "2nd" and "On" in succession will power the calculator off.
