APF Mark 21 Handheld Electronic Calculator

Description:

This white and black battery-operated calculator has number entry keys, arithmetic function keys, and memory function keys. It also has a clear entry/clear key, a percent key, and an EX key, as well as a decimal point key. There is a nine-digit display. The non-printing device has a sealed, rechargeable battery.

A mark behind the keyboard reads: aPF MARK 21 (/) Electronic Memory Calculator. A plaque on the back gives operating instructions. A mark on it reads: MARK 21 (/) Model No. Another mark on it reads: R-009175 (/) Serial Number. Another mark there reads: APF ELECTRONICS (/) NEW YORK, N.Y. 10022 (/) MADE IN JAPAN. A very small mark in the bottom corner of the plaque reads: 215901.

An October 1976 advertisement in the New York Times lists the APF Mark 21 as regularly priced at $24.99 and on sale for $19. An April 1977 ad in the Los Angeles Times lists the APF Mark 21 as selling regularly for $19.99 and available, with the exchange of any calculator, for a sale price of $14.99.

References:

Los Angeles Times, April 13, 1977, p. A10.

New York Times, October 17, 1976, p. 380.

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: 1986.0988.369Catalog Number: 1986.0988.369Accession Number: 1986.0988

Object Name: electronic calculator

Physical Description: metal (overall 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-f6da-704b-e053-15f76fa0b4fa

Record Id: nmah_1364204

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