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RFT Konkret 400

The RFT Konkret 400 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 20 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4x1.5V sealed.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions6
Keys20
Precision8
LogicAlgebraic
Display typeLED
Length165mm
Width86mm
Thickness40mm
Weight310g
Power Source4x1.5V sealed
Year introduced1975
Year discontinued1975

Replacements:

If you have a RFT Konkret 400 that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements:

See other calculators by RFT