Radio Shack EC-4021
The Radio Shack EC-4021 is a programmable calculator with 10 digits precision and algebraic logic. It has 40 keys, and an LCD (liquid crystal) display. The power source is 2x1.5V cell. Note: Sharp
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Programmable |
| Keys | 40 |
| Precision | 10 |
| Logic | Algebraic |
| Display type | LCD |
| Length | 140mm |
| Width | 76mm |
| Thickness | 10mm |
| Power Source | 2x1.5V cell |
| Year introduced | 1991 |
Replacements:
If you have a Radio Shack EC-4021 that is no longer working, you can first try replacing the 2x1.5V cell. 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: