calculator.org

the calculator home page

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.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys20
Precision8
LogicAlgebraic
Display typeLED
Length138mm
Width78mm
Thickness35mm
Weight126g
Power Source4xAA
Year introduced1974
Year discontinued1975

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:

See other calculators by AJAX