Corvus 400 Handheld Electronic Calculator
date: label: date made
content: ca 1974
name: label: maker
content: Corvus Corporation
notes: label: Description
content: This handheld electronic calculator was manufactured by a subsidiary of Mostek Corporation, Corvus Corporation of Dallas, Texas. Founded in 1969 as a spinoff of Texas Instruments, Mostek became a leading manufacturer of semiconductors. Some of its first products were chips used by the Japanese firm of Busicom in desktop electronic calculators. In 1970, Busicom introduced such a calculator that used only a single Mostek chip. For a brief time in the 1970s, Mostek sold electronic calculators under the name Corvus. According to trademark registration for Corvus, the term was first used in commerce referring to an electronic digital calculator in 1973. Advertisements for the Corvus 400 appeared in 1974.
label: Description
content: The calculator has a cream-colored plastic case and nineteen rectangular plastic keys. These include ten digit keys, a decimal point key, and a total key. Right of these is a column of four function keys. The top row of the keyboard includes an on/off switch, a percentage key, an N (average) key, and a clear key. Behind they keyboard is an eight-digit red LED display. A tag behind the display reads: CORVUS.
label: Description
content: On the back at the top is a compartment for four N batteries. A sticker below the battery compartment reads in part: CORVUS 400 (/) ELECTRONIC CALCULATOR. It also reads: SERIAL NO. (/) 400-0133577. It also reads: POWER 6VDC 75 mA 115 (/) 4 “N” Cell batteries (/) CAUTION: Attempted repair (/) by unauthorized persons will (/) void warranty. (/) CORVUS (/) CORPORATION (/) Dallas, Texas.
label: Description
content: The calculator fits into a cardboard box, which shows the device on the front cover. A mark on the top and sides of the box reads: 400 (/) CORVUS (/) PERSONAL (/) POCKET (/) CALCULATOR. A paper sticker on one end reads: Walgreens (/) UBBA (/) 38.95.
label: Description
content: References:
label: Description
content: [Advertisement], <I>Chicago Tribune</I>, October 1, 1974, p. 6. Here several Corvus calculators are advertised. The Corvus 400, regularly $44.95, is advertised as on sale for $34.88.
label: Description
content: On the founding of Mostek, see an interview with Mostek executive Richard Petritz at www.ieeeghn.org/wiki.
label: Description
content: For an interview with Mostek executive Robert Palmer, see www.semi.org.
label: Location
content: Currently not on view
place: label: place made
content: United States: Texas, Dallas
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: 1986.0988.103
label: catalog number
content: 1986.0988.103
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; keys; display cover material)
label: Physical Description
content: paper (box; sticker material)
label: Physical Description
content: metal (circuitry material)
label: Measurements
content: overall: 3/4 in x 3 in x 4 7/8 in; 1.905 cm x 7.62 cm x 12.3825 cm