Casio FT-21
The Casio FT-21 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 11 functions, 28 keys, and an LCD (liquid crystal) display. The power source is 3V cell. Note: Available in pink and blue
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 11 |
| Keys | 28 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LCD |
| Length | 92mm |
| Width | 59mm |
| Thickness | 7mm |
| Weight | 41g |
| Power Consumption | 0.002300W |
| Power Source | 3V cell |
| Year introduced | 1981 |
| Year discontinued | 1981 |
Replacements:
If you have a Casio FT-21 that is no longer working, you can first try replacing the 3V cell. 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: