Casio LC-821
The Casio LC-821 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 23 keys, and one of the early LCD (liquid crystal) displays which incorporated a yellow filter. The power source is 3xLR44 1.5V cell. The calculator was manufactured in Japan.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 6 |
| Keys | 23 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | YLCD |
| Length | 110mm |
| Width | 62mm |
| Thickness | 7mm |
| Weight | 59g |
| Power Consumption | 0.001200W |
| Power Source | 3xLR44 1.5V cell |
| Country | Japan |
| Year introduced | 1975 |
| Year discontinued | 1977 |
Replacements:
If you have a Casio LC-821 that is no longer working, you can first try replacing the 3xLR44 1.5V cell 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: