Unisonic XL-111 Desktop Electronic Calculator

This small, printing desktop electronic calculator has an array of nine digit keys with zero and decimal point keys below. On the right are four keys for arithmetic functions. Right of these are print, percentage, memory recall/memory clear, and clear entry/total keys. Above the keys are a print switch, a summation switch, and a constant switch. The power switch is on the right side.
Behind the keyboard is a nine-digit display. Behind this is a paper tape and printing mechanism.
A mark behind the display reads: Unisonic XL 111. A mark on the back reads in part: Unisonic Model No. XL-111. There is no indication that Unisonic is a registered trademark. It also reads in part: Serial No. 70713560 (/) Unisonic Products Corporation (/) Made in Hong Kong. A case on the right side of the bottom is designed to hold five rechargeable nickel-cadmium batteries. A jack for attaching to an AC adapter is at the back.
The North American Foreign Trading Corporation of New York City, N.Y., first used the trademark Unisonic in 1968 for vacuum tubes, resistors and other electronic devices. In 1972 it extended the trademark to include calculators, receiving the registration in 1975.
Compare other Unisonic electronic calculators, 1986.0988.003, 1986.0988.004, and 1986.0988.005.
Currently not on view
Object Name
electronic calculator
date made
ca 1972-1975
Unisonic Products Corporation
Physical Description
plastic (case; keys material)
metal (keyboard; circuitry material)
paper (labels material)
overall: 2 in x 3 1/2 in x 7 1/2 in; 5.08 cm x 8.89 cm x 19.05 cm
place made
Zhonghua: Hong Kong
ID Number
accession number
catalog number
See more items in
Medicine and Science: Computers
Desktop Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History, Kenneth E. Behring Center


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