Olympia OP644
The Olympia OP644 is a programmable calculator with 12 digits precision and algebraic logic. It has 54 keys, and an LCD (liquid crystal) display. The power source is 2x3V cell + sealed battery. The calculator was manufactured in Japan. Note: Casio PB-300
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Programmable |
| Keys | 54 |
| Precision | 12 |
| Logic | Algebraic |
| Display type | LCD |
| Printer | Yes |
| Length | 90mm |
| Width | 173mm |
| Thickness | 20mm |
| Weight | 258g |
| Power Consumption | 4.100000W |
| Power Source | 2x3V cell + sealed battery |
| Country | Japan |
| Year introduced | 1983 |
| Year discontinued | 1983 |
Replacements:
If you have an Olympia OP644 that is no longer working, you can first try replacing the 2x3V cell + sealed battery batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.
We suggest the following current model as a replacement: