National Semiconductor 4525 (Scientist PR)
The National Semiconductor 4525 is a programmable calculator with 8 digits precision and RPN (reverse polish notation) logic. It has 20 functions, 39 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 3xAAA sealed. Note: Novus 4525 Scientist PR
Facts at a glance:
Feature | Value |
---|---|
Type | Programmable |
Functions | 20 |
Keys | 39 |
Precision | 8 |
Logic | RPN |
Display type | LED |
Length | 150mm |
Width | 75mm |
Thickness | 31mm |
Power Source | 3xAAA sealed |
Year introduced | 1975 |
Replacements:
If you have a National Semiconductor 4525 that is no longer working, you can first try replacing the 3xAAA sealed batteries. 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: