Adler 81 (EC11)

Adler 81
Image: Joe Haupt, CC BY-SA 2.0
The Adler 81 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. The calculator was manufactured in England;Germany. Note: Rebadged Anita 811 or Triumph 81

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 5
Keys: 20
Precision: 8
Logic: Algebraic
Display type: LED
Length: 119mm
Width: 68mm
Thickness: 24mm
Weight: 140g
Power Source: 3xAA
Country: England;Germany
Original price: 170
Year introduced: 1973
YearDiscontinued: 1974

See other calculators by Adler