Radio Shack EC-220 Handheld Electronic Calculator


This relatively inexpensive handheld electronic calculator has an array of eighteen rounded rectangular keys, labeled on the keyboard. These include ten digit keys, a decimal point key, a clear entry/clear key, four arithmetic function keys, a % key, and a total key. A mark next to the top two keys reads: RS. The eight-digit red LED display is behind the keyboard. A mark behind it reads: Radio Shack. A jack for a power supply is on the back edge. The on/off switch is on the left side.

The back of the calculator has a compartment for a nine-volt battery. A sticker on the inside of this compartment reads: 20313D30-02. The calculator has four rubber discs that serve as feet. A sticker on the back reads in part: EC-220 Calculator (/) Catalog No. 65-604. Further text reads: RADIO SHACK A TANDY CORPORATION COMPANY (/) FORT WORTH, TEXAS 76107. Further text reads: Assembled in Mexico. Another mark reads: Ser. No. (/) 267484.

Compare Rockwell 8R (1986.0988.012).


Radio Shack, A Tandy Company, 1976 Electronics Catalog , p. 116, accessed September 22, 2014, at Calculator has a list price of $16.95.

Date Made: 1976

Maker: Tandy Corporation

Location: Currently not on view

Place Made: Mexico

See more items in: Medicine and Science: Computers, Computers & Business Machines, Handheld Electronic Calculators


Exhibition Location:

Credit Line: Gift of John B. Priser

Data Source: National Museum of American History

Id Number: 1986.0988.038Catalog Number: 1986.0988.038Accession Number: 1986.0988

Object Name: electronic calculatorOther Terms: electronic calculator; Handheld

Physical Description: plastic (case; keys; display cover material)rubber (feet material)metal (circuitry material)paper (sticker material)Measurements: overall: 7/8 in x 2 3/4 in x 5 7/8 in; 2.2225 cm x 6.985 cm x 14.9225 cm


Record Id: nmah_334452

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