Unisonic 1212 Handheld Electronic Calculator

Unisonic 1212 Handheld Electronic Calculator

<< >>
Usage conditions apply
This handheld electronic calculator has a metal and plastic case with an array of nineteen square plastic keys. These include ten digit keys, a decimal point key, an exchange key, four arithmetic function keys, a total key, a clear key, and a clear entry key. It does not include such common slide rule functions as square roots or trigonometric functions.
A mark behind the keyboard reads: Unisonic 1212 (/) SLIDE RULETTE. Behind this is a green vacuum fluorescent display. A switch and a jack for a power supply are along the back edge. Text on the back reads: Unisonic 1212 (/) RATING 6V-DC 0.6W (/) NO. 046435 (/) MADE IN JAPAN. The digits of the serial number are very difficult to read. Below this is a compartment for four AA batteries.
Compare 1986.0988.119.
[Advertisement], Washington Post, May 15, 1974, p. E7. Unisonic 1212 “mini pocket calculator,” regularly priced at $43.96, on sale for $37.88.
Currently not on view
Object Name
electronic calculator
date made
ca 1974
place made
Physical Description
plastic (case; keys; circuit board material)
metal (case; circuitry material)
glass (display material)
overall: 1 in x 3 3/8 in x 5 1/4 in; 2.54 cm x 8.5725 cm x 13.335 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
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.


Add a comment about this object