NS Electronics 600 Handheld Electronic Calculator

This handheld electronic calculator has a tan plastic case with fifteen plastic keys, thirteen of them square and two rectangular. It has ten digit keys, a clear key, and four keys for arithmetic functions. Behind the keyboard are a switch marked “DECIMAL” and an on/off switch. A mark between the switches reads: NS (/) ELECTRONICS. Behind the keyboard is an eight-digit red LED display.
At the top of the back is a compartment for a nine volt battery. A paper sticker below this reads in part: MODEL 600. It also reads in part: National (/) Semiconductor Corporation (/) 2921 Copper Road, (/) Santa Clara, CA 95051. It also has the mark: No. 110269.
According to trademark records, the trademark shown on this calculator was first used in commerce in September 1973 and registered in 1977. No registration is indicated on the object.
Compare three examples of the National Semiconductor 600: 1986.0988.064, 1986.0988.275, and 1986.0988.307 (the Whiz Kid). Of the three, this has the lowest serial number.
[Advertisement], Chicago Tribune, April 26, 1974, p. B10. NS600 advertised as on sale for a reduced price of $24.88.
[Advertisement], Washington Post, November 28, 1974, p. L10. NS600 on sale for $14.88, regular price $19.88.
U.S. Trademark 73008967, filed December 17, 1973, registered February 22, 1977.
Currently not on view
Object Name
electronic calculator
date made
ca 1974
National Semiconductor Corporation
Physical Description
plastic (case; display cover; keys material)
metal (circuitry material)
paper (sticker material)
overall: 7/8 in x 2 5/8 in x 5 1/8 in; 2.2225 cm x 6.6675 cm x 13.0175 cm
place made
United States
ID Number
catalog number
accession number
Computers & Business Machines
Handheld Electronic Calculators
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of John B. Priser
Additional Media

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