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Texas Instruments SR-51A

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:

Type Scientific
Functions 42
Keys 40
Precision 10
Logic Algebraic
Display type LED
Display size
Printer Y
Length 147 mm
Width 81 mm
Thickness 32 mm
Weight unknown g
Power Source 3xAA sealed
Country Holland; USA
Original price unknown
Est. current value unknown
Year introduced 1975
Year discontinued 1976

See other calculators manufactured by Texas Instruments.