Texas Instruments exactra 20
The Texas Instruments exactra 20 is an arithmetic calculator with 7 digits precision and algebraic logic. It has 4 functions, 18 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 3xAA batteries. The calculator was manufactured in USA.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 4 |
| Keys | 18 |
| Precision | 7 |
| Logic | Algebraic |
| Display type | LED |
| Length | 130mm |
| Width | 73mm |
| Thickness | 33mm |
| Power Source | 3xAA batteries |
| Country | USA |
| Year introduced | 1974 |
| Year discontinued | 1974 |
Replacements:
If you have a Texas Instruments exactra 20 that is no longer working, you can first try replacing the 3xAA batteries. 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: