Unisonic 1511L Handheld Electronic Calculator

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This handheld electronic calculator has a metal and black plastic case and an array of twenty square plastic keys. These include ten digit keys, a decimal point key, a total key, four arithmetic function keys, a percentage key, a change sign key, an exchange key, and a clear entry/clear key. Above these is the on/off switch. Behind this is an eight-digit red LED display. A mark at the back reads: Unisonic 1511L.
A jack for a power adapter is along the back edge. At the top of the back is a compartment for two AA batteries. A sticker inside it reads: 179397. A sticker near the base of the back reads in part: Remove batteries if unit unlikely (/) to be used for more than 7 days. (/) Made in Hong Kong.
Compare 1986.0988.245 and 1981.0922.06 (both examples of the Unisonic 1511L).
[Advertisement], Los Angeles Times, July 29, 1976, p. OC_B9. On sale for $8.99.
Currently not on view
date made
ca 1976
place made
Zhonghua: Hong Kong
Physical Description
plastic (case; keys material)
metal (case; circuitry material)
paper (stickers material)
overall: 7/8 in x 2 3/4 in x 5 3/4 in; 2.2225 cm x 6.985 cm x 14.605 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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