Radio Shack EC-4006 (LCD SCIENTIFIC)
The Radio Shack EC-4006 is a scientific calculator with 10 digits precision and algebraic logic. It has 38 keys, and an LCD (liquid crystal) display. The power source is 2xAA. Note: Casio
Facts at a glance:
If you have a Radio Shack EC-4006 that is no longer working, you can first try replacing the 2xAA 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: