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
Is Casio fx-82MS allowed at SAT test center? Asking this cause college board's eligible calculator list doesn't mention the Casio fx-82 series. : r/Sat
Inside a Calculator Casio fx-82MS | Battery check | Internal Circuitry | Full calculator check - YouTube