Sharp EL-8117K Handheld Electronic Calculator

Description
This handheld electronic calculator has a brown and white plastic case with a gold-colored metal inset. It has an array of twenty-two rounded square keys. These include ten digit keys, a decimal point key, a % key, four arithmetic function keys, a total key, three memory keys, a square root key, and a clear/clear entry key. Behind the keyboard is an eight-digit green fluorescent display. A mark behind this reads: SHARP ELSI MATE (/) EL-8117K. An on/off button is on the left side and a jack for a power adapter along the back edge.
At the top of the back of the calculator is a compartment for two AA batteries. A sticker on the inside of this compartment reads: 78104423. Text near the center of the back reads: ELECTRONIC CALCULATOR (/) EL-8117K. Further text reads: SHARP CORPORATION (/) MADE IN KOREA. A sticker below this lists patent numbers assigned by the U.S., U.K., Australia, Canada, Sweden, and Italy. The most recent U.S. patent listed has number 3902169. It was issued in 1975 and assigned to Sharp.
The calculator is in a cardboard box with a cardboard sleeve that slides over it to serve as a cover. Also in the box are a plastic carrying case and a sheet of instructions.
References:
The calculator.org website, accessed October 22, 2014, dates this calculator to 1977. This is also the date given by the computinghistory.org.uk website.
[Advertisement], North Hills [Pennsylvania] News-Record, March 21, 1978, p. 7. Advertises calculator as regularly priced at $15.00, on sale for $10.00.
Location
Currently not on view
date made
1977-1978
maker
Sharp Corporation
place made
Korea
Physical Description
plastic (case; keys; carrying case material)
metal (trim circuitry material)
paper (instruction sheet; box; sticker material)
Measurements
overall: 5/8 in x 3 in x 5 in; 1.5875 cm x 7.62 cm x 12.7 cm
ID Number
1986.0988.092
catalog number
1986.0988.092
accession number
1986.0988
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, Kenneth E. Behring Center

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