Texas Instruments SR-51-II
The Texas Instruments SR-51-II is a scientific calculator with 8 digits precision and algebraic logic. It has 58 functions, 40 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 2xAA sealed. The calculator was manufactured in Italy; USA.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Scientific |
| Functions | 58 |
| Keys | 40 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LED |
| Length | 145mm |
| Width | 80mm |
| Thickness | 33mm |
| Power Source | 2xAA sealed |
| Country | Italy; USA |
| Year introduced | 1976 |
| Year discontinued | 1977 |
Replacements:
If you have a Texas Instruments SR-51-II that is no longer working, you can first try replacing the 2xAA sealed. 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: