Unisonic 1540L Handheld Electronic Calculator
date: label: date made
content: ca 1977
name: label: maker
content: Unisonic
notes: label: Description
content: This handheld electronic calculator has a metal and dark brown and tan plastic case and an array of twenty-five square plastic keys. These include ten digit keys, a decimal point key, a total key, four arithmetic function keys, and four memory keys. In addition the instrument has a change sign key, an exchange key, a square root key, a percentage key, and a clear entry/clear key. Above these is the on/off switch. Behind is an eight-digit red LED display. A mark at the back reads: Unisonic 1540L.
label: Description
content: A jack for a power adapter is along the back edge. At the top of the back is a compartment for two AA batteries. A sticker inside it reads: 59545. A sticker near the base of the back reads in part: Remove batteries if unit unlikely (/) to be used for more than 7 days. (/) Made in Hong Kong.
label: Description
content: References:
label: Description
content: [Advertisement], <I>Ludington [Michigan] Daily News</I>, August 29, 1977, p. 18. Unisonic 1540L on sale for $8.88, regularly $11.59.
label: Description
content: [Advertisement], <I>Grand Prairie [Texas] Daily News</I>, August 11, 1977, p. 14. Unisonic 1540L on sale for $8.88, regularly $11.59.
label: Location
content: Currently not on view
place: label: place made
content: China: Hong Kong
setName: label: See more items in
content: Medicine and Science: Computers
label: See more items in
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: 1986.0988.294
label: catalog number
content: 1986.0988.294
label: accession number
content: 1986.0988
objectType: label: Object Name
content: electronic calculator
physicalDescription: label: Physical Description
content: metal (case; circuitry material)
label: Physical Description
content: paper (stickers material)
label: Physical Description
content: plastic (case; keys material)
label: Measurements
content: overall: 7/8 in x 2 3/4 in x 5 3/4 in; 2.2225 cm x 6.985 cm x 14.605 cm