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Mathix BJ-21M

The Mathix BJ-21M is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 25 keys, and one of the early LCD (liquid crystal) displays which incorporated a yellow filter. Note: Black Jack game

Facts at a glance:

FeatureValue
TypeArithmetic
Functions6
Keys25
Precision8
LogicAlgebraic
Display typeYLCD
Length105mm
Width66mm
Thickness8mm
Year introduced1985

Replacements:

If you have a Mathix BJ-21M 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 Mathix