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My Casio calc has been used so much that the button ink has faded. Those of you who own Casio calcs know their ink never fades. : r/Wellworn
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Casio launches the world's first scientific calculator with spreadsheet functionality! - Night Helper
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Casio FX 260 SOLAR II Scientific Calculator - 144 Functions - Easy-to-read Display - 10 Digits - Solar Powered - 5" x 0.6" x 2.9" - Black - 1 Each - Walmart.com
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