Royal 861 (MINI CARD 861)
The Royal 861 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 24 keys, and an LCD (liquid crystal) display. The power source is 2x1.5V cell.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 6 |
| Keys | 24 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LCD |
| Length | 55mm |
| Width | 85mm |
| Power Source | 2x1.5V cell |
| Year introduced | 1980 |
| Year discontinued | 1980 |
Replacements:
If you have a Royal 861 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 models as possible replacements: