Answermath M-80 Handheld Electronic Calculator

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.

Reference:

Chicago Tribune, December 1, 1974, p. S A7.

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