calculator.org

the calculator home page

Qualitron 4040

The Qualitron 4040 is an arithmetic calculator with algebraic logic. It has one of the early LCD (liquid crystal) displays which incorporated a yellow filter.

Facts at a glance:

FeatureValue
TypeArithmetic
LogicAlgebraic
Display typeYLCD
Year introduced1978

Replacements:

If you have a Qualitron 4040 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 Qualitron