Radio Shack EC-21 Handheld Electronic Calculator, Blackjack


This device operates both as a four-function handheld electronic calculator and as an electronic game of blackjack. It has a metal case with plastic trim, fifteen rectangular plastic keys, and a ten-digit green fluorescent display. Cards “dealt” to the player are indicated on the right of the display, those to the “dealer” on the left. Only one player other than the dealer is allowed. Text at the base of the keyboard reads: Radio Shack EC-21. A jack for a power adapter is along the front edge.

A compartment at the base of the back holds three AAA batteries. A paper sticker inside this compartment reads: NO: 58018 (/) 7A8 Text on the back of the calculator reads in part: BLACKJACK 21 (/) Cat. No. 60-3011/ It also reads in part: MADE IN TAIWAN.

Compare 1986.0988.295 (the Unisonic 21-P1) and 1986.0988.048 (the Radio Shack EC-21).


[Advertisement], Chicago Tribune, December 17, 1978, p. A3. Model EC-21 on sale for $21.95. Advertised as “Las Vegas Style Blackjack Game Calculator Fun.”

Radio Shack, Blackjack 21 Owner’s Manual,” Fort Worth, Texas: Tandy Corporation. An online version of this is at

Date Made: 1978

Maker: Tandy Corporation

Location: Currently not on view

Place Made: Taiwan

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: 1986.0988.048Catalog Number: 1986.0988.048Accession Number: 1986.0988

Object Name: electronic calculatorOther Terms: electronic calculator; Handheld

Physical Description: metal (case; circuitry material)plastic (keys; trim material)paper (sticker material)Measurements: overall: 1/2 in x 3 1/4 in x 5 5/8 in; 1.27 cm x 8.255 cm x 14.2875 cm


Record Id: nmah_334462

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