Casio fx-31
The Casio fx-31 is a scientific calculator with 8 digits precision and algebraic logic. It has 27 functions, 35 keys, and a VFD (vacuum fluorescent) display. The power source is 2xAA batteries. The calculator was manufactured in Japan. Note: First calculator bought at university
A sample of this calculator is held in the calculator.org collection.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Scientific |
| Functions | 27 |
| Keys | 35 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | VFD |
| Length | 145mm |
| Width | 84mm |
| Thickness | 25mm |
| Weight | 132g |
| Power Consumption | 0.250000W |
| Power Source | 2xAA batteries |
| Country | Japan |
| Year introduced | 1978 |
| Year discontinued | 1980 |
Replacements:
If you have a Casio fx-31 that is no longer working, you can first try replacing the 2xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.
We suggest the following current model as a replacement: