Rockwell 24K II Handheld Electronic Calculator

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This handheld electronic calculator has a metal case and twenty-five rectangular plastic keys. These include ten digit keys, a decimal point key, four arithmetic function keys, a total key, a % key, a change sign key, an exchange key, a square root key, and four memory keys. The on/off switch is left of the top row of keys. At the bottom of the keyboard a mark reads: the 24K II. A mark below this reads: Rockwell. Above the keyboard is an eight-digit blue fluorescent display. The jack for a power adapter is along the front edge.
A sticker attached to the back reads: Rockwell (/) International (/) Model 24K II (/) Made in Japan. It also reads: Microelectronics Product Division (/) Anaheim, CA 92803 Ser. No. (/) 148417.096.
This example lacks a case.
Compare the Rockwell 24K (1986.0988.238).
[Advertisement], Washington Post, October 15, 1976, p. A16. Rockwell 24K II sells for $34.95.
Currently not on view
date made
ca 1976
Rockwell International
place made
Physical Description
plastic (keys; display cover material)
metal (case; circuitry material)
paper (sticker material)
overall: 1/2 in x 3 in x 5 3/8 in; 1.27 cm x 7.62 cm x 13.6525 cm
ID Number
catalog number
accession number
Credit Line
Gift of John B. Priser
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History


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