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MBO Comet II

The MBO Comet II is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 22 keys, and a VFD (vacuum fluorescent) display. The power source is PP3 9V.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys22
Precision8
LogicAlgebraic
Display typeVFD
Length130mm
Width73mm
Thickness23mm
Power SourcePP3 9V
Year introduced1976
Year discontinued1976

Replacements:

If you have a MBO Comet II that is no longer working, you can first try replacing the PP3 9V 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