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Radio Shack EC-400

The Radio Shack EC-400 is an arithmetic calculator with unknown digits precision and algebraic logic. It has 8 functions, 25 keys and an LED (light-emitting diode) display, typical of calculators of this era. The power source is Sealed battery pack.

Facts at a glance:

Type Arithmetic
Functions 8
Keys 25
Precision unknown
Logic Algebraic
Display type LED
Display size
Length 133 mm
Width 80 mm
Thickness unknown mm
Weight unknown g
Power Source Sealed battery pack
Original price unknown
Est. current value unknown
Year introduced 1975
Year discontinued

See other calculators manufactured by Radio Shack.