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MBO alpha I (SC-40)

The MBO alpha I is a scientific calculator with 10 digits precision and algebraic logic. It has 32 functions, 39 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4xAA sealed. The calculator was manufactured in Hong Kong.

Facts at a glance:

FeatureValue
TypeScientific
Functions32
Keys39
Precision10
LogicAlgebraic
Display typeLED
Length170mm
Width84mm
Thickness40mm
Power Consumption1.200000W
Power Source4xAA sealed
CountryHong Kong
Year introduced1974
Year discontinued1974

Replacements:

If you have a MBO alpha I that is no longer working, you can first try replacing the 4xAA sealed 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:

See other calculators by MBO