calculator.org

the calculator home page

Radio Shack EC-4001 (Programmable)

The Radio Shack EC-4001 is a programmable calculator with 8 digits precision and algebraic logic. It has 19 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V. Note: Sinclair Cambridge Programmable

Facts at a glance:

FeatureValue
TypeProgrammable
Keys19
Precision8
LogicAlgebraic
Display typeLED
Length102mm
Width51mm
Thickness25mm
Power SourcePP3 9V
Year introduced1977
Year discontinued1978

Replacements:

If you have a Radio Shack EC-4001 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 model as a replacement:

See other calculators by Radio Shack