APF Mark 40 Handheld Electronic Calculator
date: label: date made
content: ca 1975
name: label: maker
content: APF Electronics
notes: label: Description
content: This handheld electronic calculator has a light tan plastic case and a gray plastic keyboard. It has an array of eighteen rectangular keys with oval corners. These include ten digit keys and a decimal point key, keys for the four arithmetic functions, an equals/constant key, a percentage key, and a clear entry/clear key. The eight-digit LED display is behind the keyboard. The battery compartment opens from the back at the top. The device has two plastic feet. The socket for the adapter is on the right.
label: Description
content: A mark on the front reads: aPF MARK 40. The paper tag on the back reads: aPF ELECTRONICS, INC. (/) MODEL NO: MARK 40 (/) D.C. 9.0 VOLTS (/) CAUTION: Use only model 710 (/) or 751S adaptor (optional) to (/) operate on A. C. (/) SERIAL No: R-0205395 (/) MADE IN JAPAN.
label: Description
content: According to an advertisement in the May 30, 1975, <I>Los Angeles Times</I>, the APF Mark 40 sold for $13.88, with an additional $3.95 for the adaptor. In July, 1976, it was advertised there as selling at a sale price of $5.99 with an additional $3.99 for the adapter. The January 4, 1976, <I>Chicago Tribune</I> gives a regular price of $12.99, a sale price of $9.97 and a price for the adapter of $3.99.
label: Description
content: Compare 1986.0988.329 (a Montgomery Ward P90).
label: Description
content: References:
label: Description
content: <I>Chicago Tribune</I>, January 4, 1976, p. 12
label: Description
content: <I>Los Angeles Times</I>, May 30, 1975, p. B23.
label: Description
content: <I>Los Angeles Times</I>, July 8, 1976, p. B13.
label: Location
content: Currently not on view
place: label: place made
content: Japan
setName: label: See more items in
content: Medicine and Science: Computers
label: See more items in
content: Computers & Business Machines
label: See more items in
content: Handheld Electronic Calculators
creditLine: label: Credit Line
content: Gift of John B. Priser
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0988.169
label: catalog number
content: 1986.0988.169
label: accession number
content: 1986.0988
objectType: label: Object Name
content: electronic calculator
label: Other Terms
content: electronic calculator; Handheld
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: metal (circuitry material)
label: Physical Description
content: paper (sticker material)
label: Measurements
content: overall: 1 1/4 in x 2 in x 4 1/2 in; 3.175 cm x 5.08 cm x 11.43 cm