Canon card LC-31
The Canon card LC-31 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 24 keys, and one of the early LCD (liquid crystal) displays which incorporated a yellow filter. The power source is 2xAAA batteries. The calculator was manufactured in Japan.
From the name you might think this was credit card sized and thin. In fact it is much the same size as other calculators of the this type.
The yellow filter on the LCD display indicates that this is one of the early LCD models.
A sample of this calculator is held in the calculator.org collection.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 6 |
| Keys | 24 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | YLCD |
| Length | 128mm |
| Width | 70mm |
| Thickness | 13mm |
| Power Consumption | 0.000180W |
| Power Source | 2xAAA batteries |
| Country | Japan |
| Year introduced | 1979 |
| Year discontinued | 1981 |
Replacements:
If you have a Canon card LC-31 that is no longer working, you can first try replacing the 2xAAA 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: