Royal 3HPD
The Royal 3HPD is an arithmetic calculator with algebraic logic. It has 5 functions, 26 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA sealed.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 5 |
| Keys | 26 |
| Logic | Algebraic |
| Display type | VFD |
| Printer | Yes |
| Length | 140mm |
| Width | 70mm |
| Power Source | 4xAA sealed |
| Year introduced | 1980 |
Replacements:
If you have a Royal 3HPD that is no longer working, you can first try replacing the 4xAA 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: