The TI-84 calculator is a calculator used by Kirk Weiler and Mr. Boyt on numerous occasions and has some supernatural connection with him. He is seen using a spell to summon it and remove it. It can solve equations and graph many things n stuff and more stuff. The TI-84 is considered to be the ultimate means of defence by many math teachers across the omniverse. It can create a near infinite amount of graphs and coordinates, often resulting in what is known as a Time Rift, often confused with Gates.

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