Radio Shack EC-250
The Radio Shack EC-250 is an arithmetic calculator with 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 3xAA. Note: Bowmar MX-55
Facts at a glance:
If you have a Radio Shack EC-250 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: