Unisonic 830-A 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 black- and silver-colored plastic and metal case with an array of twenty-one square plastic keys. These include ten digit keys and a decimal point key (white) as well as four arithmetic function keys, a total key, a clear key, a clear entry key, and a percentage key (turquoise). The square root and change sign keys in the topmost row are orange. Right of these, a mark scratched on the case reads: UNISONIC-830A. Right of this is an on/off switch. Behind is an eight-digit green vacuum fluorescent display. A power jack is on the back edge.
label: Description
content: A paper sticker on the back gives calculation examples. It reads in part: 830A. It also reads: SERIAL NO. (/) 004991 (/) MADE IN JAPAN. Below this is a compartment for four 1.5V (AAA) batteries.
label: Description
content: Compare 1986.0988.114 (a Unisonic 811-A). That calculator lacks the square root and change sign keys.
label: Description
content: No references found.
label: Location
content: Currently not on view
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: 1986.0988.113
label: accession number
content: 1986.0988
label: catalog number
content: 1986.0988.113
objectType: label: Object Name
content: electronic calculator
label: Other Terms
content: electronic calculator; Handheld
physicalDescription: label: Physical Description
content: plastic (case; keys material)
label: Physical Description
content: metal (trim; circuitry material)
label: Physical Description
content: glass (display material)
label: Physical Description
content: paper (sticker material)
label: Measurements
content: overall: 1 1/8 in x 3 1/4 in x 5 1/4 in; 2.8575 cm x 8.255 cm x 13.335 cm