APF MARK 56
The APF MARK 56 is a scientific calculator with algebraic logic. It has an LED (light-emitting diode) display typical of calculators of this era. The power source is Sealed battery pack.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Scientific |
| Logic | Algebraic |
| Display type | LED |
| Length | 152mm |
| Width | 76mm |
| Power Source | Sealed battery pack |
| Year introduced | 1977 |
Replacements:
If you have an APF MARK 56 that is no longer working, you can consider replacing the calculator with a modern equivalent.
We suggest the following current model as a replacement: