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Radio Shack EC-100 (BATTERY-AC ELECTRONIC CALCULATOR)

Radio Shack EC-100
Image: Joe Haupt, CC BY-SA 2.0

The Radio Shack EC-100 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 18 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4xAA. Note: Longines Symphonette Battery-AC Electronic Calculator

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys18
Precision8
LogicAlgebraic
Display typeLED
Length152mm
Width89mm
Power Source4xAA
Year introduced1973
Year discontinued1973

Replacements:

If you have a Radio Shack EC-100 that is no longer working, you can first try replacing the 4xAA 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