Object Details
maker
Unisonic
Description
This handheld electronic calculator has a black- and silver-colored plastic case with an array of nineteen square plastic keys. These include ten digit keys and a decimal point key (white) as well as four arithmetic function keys, a total key, a clear key, and a clear entry key (turquoise). The percentage key is orange. Above the keys and on the right is an on/off switch. Above this, on the left, a mark reads: Unisonic 811. Behind this is an eight-digit green vacuum fluorescent display. A power jack is on the back edge.
A paper sticker on the back gives calculation examples. It reads in part: 811-A. It also reads: SERIAL NO. (/) 143884 (/) MADE IN JAPAN. Below this is a compartment for four 1.5V AAA batteries.
Compare 1986.0988.113 (a Unisonic 830-A).
Reference:
[Advertisement], Chicago Tribune, September 4, 1975, p. S4. A different version of the Unisonic 811 advertised as selling for $15.88.
The calculator.org website dates the Unisonic 811 to 1976.
Location
Currently not on view
Credit Line
Gift of John B. Priser
date made
ca 1976
ID Number
1986.0988.114
accession number
1986.0988
catalog number
1986.0988.114
Object Name
electronic calculator
Other Terms
electronic calculator; Handheld
Physical Description
plastic (case; keys material)
metal (top of case; circuitry material)
glass (display material)
paper (sticker material)
Measurements
overall: 1 in x 3 1/8 in x 5 1/4 in; 2.54 cm x 7.9375 cm x 13.335 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_334528