Texas Instruments TI-31
The Texas Instruments TI-31 is a finance calculator with 8 digits precision and algebraic logic. It has 33 functions, 40 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is PP3 9V. The calculator was manufactured in Italy. Note: TI Money Manager
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Finance |
| Functions | 33 |
| Keys | 40 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LED |
| Length | 145mm |
| Width | 80mm |
| Thickness | 33mm |
| Power Source | PP3 9V |
| Country | Italy |
| Year introduced | 1977 |
| Year discontinued | 1986 |
Replacements:
If you have a Texas Instruments TI-31 that is no longer working, you can first try replacing the PP3 9V battery. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.
We suggest the following current models as possible replacements: