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Radio Shack EC-4021

Radio Shack EC-4021
Image: Joe Haupt, CC BY-SA 2.0

The Radio Shack EC-4021 is a programmable calculator with 10 digits precision and algebraic logic. It has 40 keys, and an LCD (liquid crystal) display. The power source is 2x1.5V cell. Note: Sharp

Facts at a glance:

FeatureValue
TypeProgrammable
Keys40
Precision10
LogicAlgebraic
Display typeLCD
Length140mm
Width76mm
Thickness10mm
Power Source2x1.5V cell
Year introduced1991

Replacements:

If you have a Radio Shack EC-4021 that is no longer working, you can first try replacing the 2x1.5V cell batteries. 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