calculator.org

the calculator home page

Texas Instruments SR-51-II

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

The Texas Instruments SR-51-II is a scientific calculator with 8 digits precision and algebraic logic. It has 58 functions, 40 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 2xAA sealed. The calculator was manufactured in Italy; USA.

Facts at a glance:

FeatureValue
TypeScientific
Functions58
Keys40
Precision8
LogicAlgebraic
Display typeLED
Length145mm
Width80mm
Thickness33mm
Power Source2xAA sealed
CountryItaly; USA
Year introduced1976
Year discontinued1977

Replacements:

If you have a Texas Instruments SR-51-II that is no longer working, you can first try replacing the 2xAA 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