![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 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](https://preview.redd.it/my-ti-85-scientific-calculator-circa-1992-30-years-old-this-v0-yu8eax8inmo81.jpg?width=640&crop=smart&auto=webp&s=79186787f05110dde3c3d6bce21d60fde1183319)
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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File:Vintage Texas Instruments TI-30 Pocket Calculator, Red LED, Made in USA, A Very Widely Used Calculator, Price Was $24.95 in 1976 (8732557514).jpg - Wikimedia Commons
![Amazon.com : Texas Instruments TI-30XIIS Scientific Calculator - Teacher Kit (10 pack) : Scientific Calculators : Office Products Amazon.com : Texas Instruments TI-30XIIS Scientific Calculator - Teacher Kit (10 pack) : Scientific Calculators : Office Products](https://m.media-amazon.com/images/I/917TnqeSyCL._AC_UF894,1000_QL80_.jpg)