National Semiconductor 835A Handheld Electronic Calculator

This handheld electronic calculator has a dark brown plastic case and twenty-three rectangular plastic keys. These include ten digit keys, a clear entry key, a clear key, a decimal point key, four arithmetic function keys, a total key, four memory keys, and a percentage key. Left of the top row of keys is an on/off switch. A mark above it reads: 835. A mark to the right of this mark reads: National (/) Semiconductor.
Behind the keyboard is an eight-digit LED display. A jack for an adapter is on the left side. The back of the calculator has a compartment for a battery. Text at the bottom of the back reads: MADE IN HONG KONG.
Compare to Novus 835 (1986.0988.276), which was also made by National Semiconductor. Also see the National Semiconductor 835 (1986.0988.229). These two calculators have a % key, which this one does not. Also, on the 835A the clear and the clear entry keys are distinct.
[Advertisement], Washington Post, April 9, 1979, p. D10. The National Semiconductor 835A is the least expensive of three calculators distributed as part of a bank special offer. Other calculators listed are the National Semiconductor NS 99 and National Semiconductor 102A.
Currently not on view
Object Name
electronic calculator
date made
National Semiconductor Corporation
Physical Description
plastic (case; keys; display cover material)
metal (circuitry material)
overall: 1 in x 2 1/2 in x 5 1/2 in; 2.54 cm x 6.35 cm x 13.97 cm
place made
Zhonghua: Hong Kong
ID Number
catalog number
accession number
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History, Kenneth E. Behring Center


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