Novus 650 (mathmate ; mathbox)
The Novus 650 is an arithmetic calculator with 6 digits precision and RPN (reverse polish notation) logic. It has 4 functions, 15 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is PP3 9V battery.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 4 |
| Keys | 15 |
| Precision | 6 |
| Logic | RPN |
| Display type | LED |
| Length | 127mm |
| Width | 70mm |
| Thickness | 23mm |
| Power Source | PP3 9V battery |
| Original price | $16 |
| Year introduced | 1975 |
Replacements:
If you have a Novus 650 that is no longer working, you can first try replacing the PP3 9V battery. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.
We suggest the following current model as a replacement: