Hewlett-Packard HP 81 (Classic)
The Hewlett-Packard HP 81 is a finance calculator with 12 digits precision and RPN (reverse polish notation) logic. It has 11 functions, 43 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is Mains. Note: Desktop printer version of HP-80
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Finance |
| Functions | 11 |
| Keys | 43 |
| Precision | 12 |
| Logic | RPN |
| Display type | LED |
| Printer | Yes |
| Length | 390mm |
| Width | 275mm |
| Thickness | 137mm |
| Weight | 6000g |
| Power Source | Mains |
| Year introduced | 1973 |
| Year discontinued | 1978 |
Replacements:
If you have a Hewlett-Packard HP 81 that is no longer working, you can consider replacing the calculator with a modern equivalent.
We suggest the following current models as possible replacements: