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Texas Instruments SR-51-II

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:

Type Scientific
Functions 58
Keys 40
Precision 8
Logic Algebraic
Display type LED
Display size
Printer
Length 145 mm
Width 80 mm
Thickness 33 mm
Weight unknown g
Power Source 2xAA sealed
Country Italy; USA
Original price unknown
Est. current value unknown
Year introduced 1976
Year discontinued 1977

See other calculators manufactured by Texas Instruments.