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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 AA batteries.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions6
Keys19
Precision8
LogicAlgebraic
Display typeVFD
Length110mm
Width73mm
Thickness22mm
Weight100g
Power SourceAA
Year introduced1975
Year discontinued1975

Replacements:

If you have a MBO DERBY II that is no longer working, you can first try replacing the 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:

See other calculators by MBO