Vanguard X-811
The Vanguard X-811 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 20 keys, and an LED (light-emitting diode) display typical of calculators of this era.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 5 |
| Keys | 20 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LED |
| Year introduced | 1975 |
Replacements:
If you have a Vanguard X-811 that is no longer working, you can consider replacing the calculator with a modern equivalent.
We suggest the following current models as possible replacements: