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Radio Shack EC-425

The Radio Shack EC-425 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 10 functions, 23 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 3xAA. Note: TI SR-10

Facts at a glance:

FeatureValue
TypeArithmetic
Functions10
Keys23
Precision8
LogicAlgebraic
Display typeLED
Length160mm
Width79mm
Thickness38mm
Power Consumption1.000000W
Power Source3xAA
Year introduced1974
Year discontinued1975

Replacements:

If you have a Radio Shack EC-425 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:

See other calculators by Radio Shack