Radio Shack EC-4021

Radio Shack EC-4021
Image: Joe Haupt, CC BY-SA 2.0
The Radio Shack EC-4021 is a programmable calculator with 10 digits precision and algebraic logic. It has 40 keys, and an LCD (liquid crystal) display. The power source is 2x1.5V cell. Note: Sharp

Facts at a glance:

Feature Value
Type: Programmable
Keys: 40
Precision: 10
Logic: Algebraic
Display type: LCD
Length: 140mm
Width: 76mm
Thickness: 10mm
Power Source: 2x1.5V cell
Year introduced: 1991

See other calculators by Radio Shack