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Radio Shack EC-490

Radio Shack EC-490
Image: Joe Haupt, CC BY-SA 2.0

The Radio Shack EC-490 is a scientific calculator with 8 digits precision and algebraic logic. It has 26 functions, 25 keys, and a VFD (vacuum fluorescent) display. The power source is Sealed battery pack. Note: same case as Rockwell 63R

Facts at a glance:

FeatureValue
TypeScientific
Functions26
Keys25
Precision8
LogicAlgebraic
Display typeVFD
Length159mm
Width83mm
Power SourceSealed battery pack
Year introduced1976
Year discontinued1976

Replacements:

If you have a Radio Shack EC-490 that is no longer working, 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