Radio Shack EC-220

Radio Shack EC-220
Image: Joe Haupt, CC BY-SA 2.0
The Radio Shack EC-220 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 18 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V. Note: Rockwell 8R; 9TR; House of Fraser 8F

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 5
Keys: 18
Precision: 8
Logic: Algebraic
Display type: LED
Length: 148mm
Width: 70mm
Thickness: 20mm
Weight: 130g
Power Source: PP3 9V
Year introduced: 1975
YearDiscontinued: 1976

See other calculators by Radio Shack