Unisonic 940-A Handheld Electronic Calculator

Description
This handheld electronic calculator has a black and silver-colored plastic case and an array of nineteen rectangular plastic keys on a metallic-colored keyboard. It has ten digit keys, a decimal point key, a total key, four arithmetic function keys, a clear/clear entry key, a memory key, and a percentage key. The on/off switch is at the far right on the top row of keys. Text behind the keyboard reads: Unisonic 940. Behind this is an eight-digit green vacuum fluorescent display.
A jack for a power supply is on the right side.
A compartment for three AAA batteries is on the back. A sticker above this gives calculation examples. Text here reads in part: 940-A. It also reads: SERIAL NO. (/) 03885 (/) MADE IN JAPAN. The name “JOHN” is scratched in the plastic on the back of the calculator.
Compare the Unisonic 940 (1986.0988.319). The two calculators have cases and keys of somewhat different colors.
Reference:
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p. 168.
Location
Currently not on view
Object Name
electronic calculator
date made
ca 1978
maker
Unisonic
Physical Description
plastic (case; keys material)
metal (circuitry material)
glass (display material)
Measurements
overall: 1 in x 2 1/2 in x 3 3/4 in; 2.54 cm x 6.35 cm x 9.525 cm
place made
Japan
ID Number
1986.0988.320
catalog number
1986.0988.320
accession number
1986.0988
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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