APF MARK 90
The APF MARK 90 is a programmable calculator with 8 digits precision and algebraic logic. It has 45 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 3xSealed.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Programmable |
| Keys | 45 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LED |
| Length | 152mm |
| Width | 76mm |
| Thickness | 25mm |
| Power Source | 3xSealed |
| Year introduced | 1977 |
Replacements:
If you have an APF MARK 90 that is no longer working, you can consider replacing the calculator with a modern equivalent.
We suggest the following current model as a replacement: