APF Mark 23 Handheld Electronic Calculator

Description:

This white and black calculator has black number entry and digit keys. It also has white arithmetic function keys, a clear entry/clear key, a percentage key, an x/y exchange key, and an equals key. Pushing a read function key allows one to switch the function of the white keys to memory keys, a square root key, an inverse key, and a square key . The display shows nine digits. The non-printing device has a sealed, rechargeable battery. It fits in a plastic sleeve.

A mark behind the keyboard reads: aPF MARK 23 (/) Electronic Slide Rule Calculator. A plaque on the back gives operating instructions. A mark on it reads: MARK 23 (/) Model No. Another mark on it reads: J-007440 (/) Serial Number. Another mark there reads: APF ELECTRONICS INC. (/) NEW YORK, N.Y. 10022 (/) MADE IN JAPAN.

A May 1976 advertisement in the Los Angeles Times lists the APF Mark 23 as regularly priced at $39.95 and on sale for $29.99.

Reference:

Los Angeles Times, May 28, 1976. p. D5.

Date Made: ca 1976

Maker: APF Electronics

Location: Currently not on view

Place Made: Japan

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

Exhibition:

Exhibition Location:

Credit Line: Gift of John B. Priser

Data Source: National Museum of American History

Id Number: 1986.0988.370Catalog Number: 1986.0988.370Accession Number: 1986.0988

Object Name: electronic calculator

Physical Description: metal (keyboard material)plastic (overall material)Measurements: overall: 1 in x 3 in x 6 1/4 in; 2.54 cm x 7.62 cm x 15.875 cm

Guid: http://n2t.net/ark:/65665/ng49ca746ac-f6db-704b-e053-15f76fa0b4fa

Record Id: nmah_1364206

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