Radio Shack EC-21 (Blackjack 21)

Radio Shack EC-21
Image: Joe Haupt, CC BY-SA 2.0
The Radio Shack EC-21 is an arithmetic calculator with 10 digits precision and algebraic logic. It has 6 functions, 23 keys, and an LCD (liquid crystal) display. Note: game

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 6
Keys: 23
Precision: 10
Logic: Algebraic
Display type: LCD
Year introduced: 1985

See other calculators by Radio Shack