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Brother 722SR

The Brother 722SR is a scientific calculator with algebraic logic. It has 36 functions, 45 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA.

Facts at a glance:

FeatureValue
TypeScientific
Functions36
Keys45
LogicAlgebraic
Display typeVFD
Power Source4xAA
Year introduced1977

Replacements:

If you have a Brother 722SR that is no longer working, you can first try replacing the 4xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement:

See other calculators by Brother