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Texas Instruments SR-51A

Texas Instruments SR-51A
Image: Joe Haupt, CC BY-SA 2.0

The Texas Instruments SR-51A is a scientific calculator with 10 digits precision and algebraic logic. It has 42 functions, 40 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xAA sealed. The calculator was manufactured in Holland; USA.

Facts at a glance:

FeatureValue
TypeScientific
Functions42
Keys40
Precision10
LogicAlgebraic
Display typeLED
PrinterYes
Length147mm
Width81mm
Thickness32mm
Power Source3xAA sealed
CountryHolland; USA
Year introduced1975
Year discontinued1976

Replacements:

If you have a Texas Instruments SR-51A that is no longer working, you can first try replacing the 3xAA sealed 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 Texas Instruments