Radio Shack EC-425
The Radio Shack EC-425 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 10 functions, 23 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xAA. Note: TI SR-10
Facts at a glance:
If you have a Radio Shack EC-425 that is no longer working, you can first try replacing the 3xAA 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: