Sharp EL-509D
The Sharp EL-509D is a scientific calculator with 10 digits precision and algebraic logic. It has 58 functions, 44 keys, and an LCD (liquid crystal) display. The power source is 2x1.5V cell.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Scientific |
| Functions | 58 |
| Keys | 44 |
| Precision | 10 |
| Logic | Algebraic |
| Display type | LCD |
| Length | 143mm |
| Width | 76mm |
| Thickness | 9mm |
| Power Source | 2x1.5V cell |
| Year introduced | 1985 |
Replacements:
If you have a Sharp EL-509D 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: