Craig 4509
The Craig 4509 is an arithmetic calculator with algebraic logic. It has an LED (light-emitting diode) display typical of calculators of this era. The power source is a single AA battery.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Logic | Algebraic |
| Display type | LED |
| Length | 140mm |
| Width | 70mm |
| Power Source | a single AA battery |
| Year introduced | 1974 |
Replacements:
If you have a Craig 4509 that is no longer working, you can first try replacing the a single AA 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: