AJAX 2500
The AJAX 2500 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 20 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 4xAA batteries.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 5 |
| Keys | 20 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LED |
| Length | 138mm |
| Width | 78mm |
| Thickness | 35mm |
| Weight | 126g |
| Power Source | 4xAA batteries |
| Year introduced | 1974 |
| Year discontinued | 1975 |
Replacements:
If you have an AJAX 2500 that is no longer working, you can first try replacing the 4xAA 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: