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Rockwell the 20T

The Rockwell the 20T is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 23 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions6
Keys23
Precision8
LogicAlgebraic
Display typeVFD
Length138mm
Width75mm
Thickness16mm
Weight92g
Power Source3xAAA
Year introduced1977
Year discontinued1977

Replacements:

If you have a Rockwell the 20T that is no longer working, you can first try replacing the 3xAAA batteries. 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 Rockwell