National Semiconductor NS 4520 Handheld Electronic Calculator, the Scientist
date: label: date made
content: ca 1976
name: label: maker
content: National Semiconductor Corporation
notes: label: Description
content: In the mid-1970s, National Semiconductor Corporation made a series of “professional” calculators that were distributed under both the Novus and the National Semiconductor brand names. This handheld electronic calculator, dubbed the Scientist, sold under the National Semiconductor name. The calculator has a black plastic case, thirty-five rectangular plastic keys, and a plastic display cover. At the bottom of the keyboard are ten digit keys, a decimal point key, and a clear key. To the right of these is a column of four arithmetic function keys. The function of these keys is marked on the keys themselves. Also included among the marked keys is an enter key. The calculator used reverse Polish notation.
label: Description
content: To the right and above these keys are a variety of function keys. The function of the keys is indicated on the keyboard. A mark above the keyboard reads: Scientist. Behind the keyboard is an eight-digit red LED display. A mark above this reads: National Semiconductor. The jack for a power adapter is along the back edge and a power switch is on the left edge.
label: Description
content: The calculator has no separate battery compartment. A marked scratched on the case reads: MODEL (/) 4520. A sticker at the bottom of the back reads: Made in Hong Kong.
label: Description
content: Compare the Novus Scientist (1986.0988.228).
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
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: 1986.0988.063
label: catalog number
content: 1986.0988.063
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 (case; display cover; keys material)
label: Physical Description
content: metal (circuitry material)
label: Physical Description
content: paper (sticker material)
label: Measurements
content: overall: 1 in x 2 3/4 in x 6 in; 2.54 cm x 6.985 cm x 15.24 cm