TI-81 - Wikipedia
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My TI-85 scientific calculator circa 1992 (30 years old this year) still going strong! I use this DAILY. Dropped it 50 times or so over the years so hard the batteries all
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calculators/Texas Instruments TI-85 - calculator.org
Amazon.com : Texas Instruments TI-85 Advanced Graphing Scientific Calculator : Office Products
TI-84 Plus series - Wikipedia
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Is there a TI 85 Online Calculator ?
Pre-Calculus - Evaluate a function using the TI-85/86 calculator - YouTube
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