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Tandy EC-4020

Tandy EC-4020

The Tandy EC-4020 is a programmable calculator with 10 digits precision and formula input logic. It has 95 functions, 44 keys, and an LCD (liquid crystal) display. The power source is 2xCR20323V cell. Note: Radio Shack, Casio fx-4000P A sample of this calculator is held in the calculator.org collection.

Facts at a glance:

FeatureValue
TypeProgrammable
Functions95
Keys44
Precision10
LogicFormula
Display typeLCD
Length131mm
Width72mm
Thickness11mm
Weight75g
Power Consumption0.008000W
Power Source2xCR20323V cell
Year introduced1985
Year discontinued1991

Replacements:

If you have a Tandy EC-4020 that is no longer working, you can first try replacing the 2xCR20323V 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 Tandy