|
I don't feel like I go back that far, either, but I guess I did hit 50 this year. TI35's were introduced in 1979; the HP-42s was introduced in 1988 (the year I graduated high school). When I used it frequently, my HP-42s would eat a set of batteries about every 18 months.
Last edited by fanaudical; 10-18-2020 at 08:06 PM..
|