Radio Shack EC-4000 (Programmable)
The Radio Shack EC-4000 is a programmable calculator with 8 digits precision and algebraic logic. It has 40 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xAA battery pack. Note: TI 57
Facts at a glance:
|Power Source||3xAA battery pack|
If you have a Radio Shack EC-4000 that is no longer working, you can first try replacing the 3xAA battery pack 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: