National Semiconductor 835A
The National Semiconductor 835A is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 23 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 | 5 |
| Keys | 23 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LED |
| Length | 140mm |
| Width | 70mm |
| Thickness | 24mm |
| Power Source | PP3 9V battery |
| Year introduced | 1978 |
| Year discontinued | 1978 |
Replacements:
If you have a National Semiconductor 835A 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 models as possible replacements: