Radio Shack EC-490
The Radio Shack EC-490 is a scientific calculator with 8 digits precision and algebraic logic. It has 26 functions, 25 keys, and a VFD (vacuum fluorescent) display. The power source is Sealed battery pack. Note: same case as Rockwell 63R
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Scientific |
| Functions | 26 |
| Keys | 25 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | VFD |
| Length | 159mm |
| Width | 83mm |
| Power Source | Sealed battery pack |
| Year introduced | 1976 |
| Year discontinued | 1976 |
Replacements:
If you have a Radio Shack EC-490 that is no longer working, you can consider replacing the calculator with a modern equivalent.
We suggest the following current model as a replacement: