![CASIO fx-82 SUPER. I bought it in 1.992, use it in college, at the university and 20 years more at the office. Never changed battery and im not going to retire it CASIO fx-82 SUPER. I bought it in 1.992, use it in college, at the university and 20 years more at the office. Never changed battery and im not going to retire it](https://preview.redd.it/phuyskh67mx71.jpg?width=640&crop=smart&auto=webp&s=95c2267afe8ea680c9fcbc7579ae0a4403e69f14)
CASIO fx-82 SUPER. I bought it in 1.992, use it in college, at the university and 20 years more at the office. Never changed battery and im not going to retire it
How fast is Casio FX-991EX ClassWiz as compared to other scientific non-programmable calculators? - Quora
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