Casio Memory A-1 Handheld Electronic Calculator
date: label: date made
content: 1977-1978
name: label: maker
content: Casio Computer Company
notes: label: Description
content: This handheld electronic calculator has a dark brown and cream-colored plastic case and a metal keyboard. In addition to ten digit keys, a decimal point key, four arithmetic function keys, and a total key, it has all clear, clear, square root, percentage, sign change, and three memory keys. Behind the keyboard is an eight-digit vacuum fluorescent display. A mark behind this reads: CASIO MEMORY A-1 ELECTRONIC CALCULATOR. The on/off switch is on the left side and a socket for an adapter is on the top edge at the left.
label: Description
content: At the top of the back of the calculator is a compartment for a single battery. A sticker inside the compartment reads: 0237833. A mark on the back of the case reads: CASIO MEMORY A-1 (/) BATTERY SUPPLY 1.5Vx1 (/) or use AC ADAPTOR AD-1S (/) 0.12W (/) H-814 MADE IN JAPAN (/) BM CASIO COMPUTER CO. LTD.
label: Description
content: Unscrewing a screw at the base allows one to fold open the case. This reveals a variety of electronic components, including a chip made by Hitachi and marked: HD3783 (/) 6G 41.
label: Description
content: The calculator fits in a black plastic sleeve. A mark on one side of the sleeve reads: CASIO. A mark on the other side reads: MADE IN JAPAN.
label: Description
content: Compare 1986.0988.026. Both calculators have the same number on the chip.
label: Description
content: The website of Casio Corporation suggests that this calculator was introduced in 1974. However, the first advertisement found is from a March, 1977, issue of the <I>Chicago Tribune</I>. This lists the Casio Memory A-1 as on sale for $12.95. A March, 1978, advertisement in the same newspaper gives the same price.
label: Description
content: References:
label: Description
content: Casio Corporation website, with its museum.
label: Description
content: <I>Chicago Tribune</I>, March 2, 1977, p. B8.
label: Description
content: <I>Chicago Tribune</I>, March 19, 1978, p. J4.
label: Location
content: Currently not on view
place: label: place made
content: Japan
setName: label: See more items in
content: Medicine and Science: Computers
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content: Computers & Business Machines
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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: 1986.0988.331
label: catalog number
content: 1986.0988.331
label: accession number
content: 1986.0988
objectType: label: Object Name
content: electronic calculator
physicalDescription: label: Physical Description
content: plastic (case; keys; display cover; circuit boards material)
label: Physical Description
content: metal (circuitry; keyboard material)
label: Physical Description
content: glass (tube material)
label: Physical Description
content: paper (sticker material)
label: Measurements
content: overall: 3/4 in x 2 3/4 in x 4 1/2 in; 1.905 cm x 6.985 cm x 11.43 cm