Object Details
maker
Unisonic
Description
This handheld electronic calculator has a black 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. It also reads: SERIAL NO. (/) 001412 (/) MADE IN JAPAN.
Ball and Flamm give a 1978 price of $10.97 for this calculator.
Compare the Unisonic 940A (1986.0988.320).
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
Credit Line
Gift of John B. Priser
date made
ca 1978
ID Number
1986.0988.319
catalog number
1986.0988.319
accession number
1986.0988
Object Name
electronic calculator
Physical Description
plastic (case; keys material)
metal (circuitry material)
glass (display material)
Measurements
overall: 7/8 in x 2 1/2 in x 4 3/4 in; 2.2225 cm x 6.35 cm x 12.065 cm
place made
Japan
See more items in
Medicine and Science: Computers
Computers & Business Machines
Handheld Electronic Calculators
Data Source
National Museum of American History
Link to Original Record
Record ID
nmah_1363562