Corvus 400 Handheld Electronic Calculator

Object Details

Corvus Corporation

Description

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.

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.

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.

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.

References:

[Advertisement], Chicago Tribune, 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.

On the founding of Mostek, see an interview with Mostek executive Richard Petritz at www.ieeeghn.org/wiki.

For an interview with Mostek executive Robert Palmer, see www.semi.org.

Location

Currently not on view

Credit Line

Gift of John B. Priser

ca 1974

ID Number

1986.0988.103

catalog number

1986.0988.103

accession number

1986.0988

Object Name

electronic calculator

Other Terms

electronic calculator; Handheld

Physical Description

plastic (case; keys; display cover material)

paper (box; sticker material)

metal (circuitry material)

Measurements

overall: 3/4 in x 3 in x 4 7/8 in; 1.905 cm x 7.62 cm x 12.3825 cm

place made

United States: Texas, Dallas

See more items in

Medicine and Science: Computers

Computers & Business Machines

Handheld Electronic Calculators

National Museum of American History

Record ID

nmah_334517

Metadata Usage (text)

CC0

GUID (Link to Original Record)

https://n2t.net/ark:/65665/ng49ca746ae-1651-704b-e053-15f76fa0b4fa