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Prinztronic 400 (M400)

The Prinztronic 400 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 25 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V. Note: Kingsonic 5000; Satek 8M (version 1); Texet 880 Executive; Unisonic 1541L

Facts at a glance:

FeatureValue
TypeArithmetic
Functions6
Keys25
Precision8
LogicAlgebraic
Display typeLED
Length135mm
Width77mm
Thickness22mm
Weight86g
Power SourcePP3 9V
Year introduced1978
Year discontinued1978

Replacements:

If you have a Prinztronic 400 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 Prinztronic