| Brand: | CASIO |
| Model: | fx-31 |
| Type: | Scientific calculator |
| Picture: |
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| Batteries: | AA x 2 |
| Lifetime: |
Introduced: ca. 1976 Terminated: unknown |
| Notes: |
This CASIO scientific calculator has a fluorescent display, and a
slider to switch between modes. The display has no marker to
indicate that a number is stored in the calculator’s memory so
it’s up to the user to remember this. Other than that, the display
does show minute/second marks.
This calculator (as do many other CASIO scientific calculators) uses one and the same key for both the constant π as well as exponents. This works as follows. When you first enter digits, the "EXP"-key will enable you to enter the numbers exponent, otherwise it will enter the constant π. Thank you, Joop Berck, for donating this calculator to the museum. |
©2024 Ernst Mulder