Craig 4509B
The Craig 4509B is an arithmetic calculator with algebraic logic. It has 6 functions, 20 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 4xAA batteries.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 6 |
| Keys | 20 |
| Logic | Algebraic |
| Display type | LED |
| Length | 140mm |
| Width | 70mm |
| Power Source | 4xAA batteries |
| Year introduced | 1975 |
Replacements:
If you have a Craig 4509B that is no longer working, you can first try replacing the 4xAA 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: