calculator.org the calculator home page

Adler 81 EC11

The Adler 81 EC11 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 20 keys and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xAA batteries. The calculator was manufactured in England;Germany.

Facts at a glance:

Type Arithmetic
Functions 5
Keys 20
Precision 8
Logic Algebraic
Display type LED
Display size
Printer
Length 119 mm
Width 68 mm
Thickness 24 mm
Weight 140 g
Power Source 3xAA
Country England;Germany
Original price unknown
Est. current value unknown
Year introduced 1973
Year discontinued 1974

See other calculators manufactured by Adler.