MBO DERBY II
The MBO DERBY II is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is a single AA battery.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 6 |
| Keys | 19 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | VFD |
| Length | 110mm |
| Width | 73mm |
| Thickness | 22mm |
| Weight | 100g |
| Power Source | a single AA battery |
| Year introduced | 1975 |
| Year discontinued | 1975 |
Replacements:
If you have a MBO DERBY II 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: