Answermath M-80 Handheld Electronic Calculator

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This handheld electronic calculator has ten digit keys and a decimal point key in white plastic, a % key, four arithmetic function keys, an equals key, and a k= key in blue plastic, as well as two red memory keys. Above these are a clear key, an on/off switch, and an eight-digit LED display. A sticker on the front reads: ANSWERMATH. A sticker between the cancel key and the on/off switch reads: M-80, with a trademark indicated.
The back of the calculator has a battery compartment at the bottom and a plug for an adaptor—this example has no adapter. A sticker on the battery compartment lid reads: ANSWERMATH M-80 (/) SERIAL NO. N 801990 (/) BOMARK INTERNATIONAL (/) DAN-BEE MARKETING GROUP INC (/) NEW YORK CITY, N.Y. 10013 (/) MADE IN USA.
A December 1974 advertisement in the Chicago Tribune shows the calculator, describing it as a "Mini Calculator with Memory." It sold on special for $39.95. The name of the manufacturer is not indicated.
Chicago Tribune, December 1, 1974, p. S A7.
Currently not on view
date made
ca 1974
Bomark International
place made
United States
Physical Description
plastic (overall material)
overall: 1 in x 2 1/2 in x 4 1/2 in; 2.54 cm x 6.35 cm x 11.43 cm
ID Number
catalog number
accession number
Credit Line
Gift of John B. Priser
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History


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