Triumph sir SR (EC 20-S)
The Triumph sir SR is a scientific calculator with 8 digits precision and algebraic logic. It has 16 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAAA batteries. Note: Adler Sir SR
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Scientific |
| Functions | 16 |
| Keys | 19 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | VFD |
| Power Source | 3xAAA batteries |
| Year introduced | 1975 |
Replacements:
If you have a Triumph sir SR that is no longer working, you can first try replacing the 3xAAA 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: