Radio Shack EC‑4021


Brand: Radio Shack
Model: EC-4021
Type: Programmable scientific calculator
Picture: Radio Shack EC-4021
Batteries: LR 44 x 2
Lifetime: Introduced: ca. 1991
Terminated: unknown
Notes: The Radio Shack EC-4021 is a programmable (40-steps) scientific calculator with statistical functions and two memories. It's internals seem to be made by SHARP but I haven't yet found the identical SHARP calculator.

The first noticeable thing about this calculator is its keyboard: clear and full of contrast. Clear white keys with black print for all the special functions, the other way around for the number keys.

This calculator is programmable "by example". Press the "LRN"-key and the following key presses will be remembered.

Thanks Paul, for donating this calculator to the museum.