This fake solar cell in my calculator : r/assholedesign
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Texas Instruments TI-84 Plus CE Graphing Calculator (True Blue) | Marquette University Official Bookstore
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Amazon.com : Casio fx-300ES PLUS Scientific Calculator; SAT Compatible; Natural Textbook Display; Math, Trigonometry, Statistics, Algebra, Geometry and Physics Functions; Comes with Slide-on Hard Case; Black : Office Products
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