*Excellent condition *The selected region features a Texas Instruments TI-83 Plus graphing calculator, a staple tool for high school and college math and science courses. 🛠️ Essential Getting Started Steps If you are using this calculator for the first time, follow these quick steps to set it up: Turn On: Press the ON key in the bottom-left corner. Turn Off: Press the yellow 2nd key, then press ON (which activates the OFF command above it). Adjust Contrast: Press and release 2nd, then hold the up arrow ▲ to darken or the down arrow ▼ to lighten the screen. Clear Screen: Press the CLEAR key to wipe current text from the home screen.
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