National Semiconductor 500 (NS500)
The National Semiconductor 500 is an arithmetic calculator with 12 digits precision and 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 |
Precision | 12 |
Logic | Algebraic |
Display type | VFD |
Printer | Yes |
Length | 168mm |
Width | 72mm |
Thickness | 37mm |
Power Consumption | 2.500000W |
Power Source | 4xAA sealed |
Year introduced | 1979 |
Year discontinued | 1981 |
Replacements:
If you have a National Semiconductor 500 that is no longer working, you can first try replacing the 4xAA 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 models as possible replacements: