Toshiba LC-850M Handheld Electronic Calculator

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This compact handheld electronic calculator is in the shape of a ruler. It has a metal case and an array of twenty-four rectangular plastic keys. These include ten digit keys, a decimal point key, a total key, four arithmetic function keys, four memory keys, a square root key, a percentage key, a change sign key, and a clear key. The eight-digit liquid crystal display is to the left of the keyboard. Text below the display reads: LIQUID cRYSTAL LC-850M (/) TOSHIBA. Tight of this is an on/off/lock switch. The back of the calculator has a clip such as would fit over the edge of a pocket. No serial number found.
According to the website, as well as the website (both accessed December 4, 2014), this calculator was introduced in 1978, in response to the Texas Instruments TI-1700 dataclip calculator.
Currently not on view
date made
ca 1978
Toshiba Corporation
place made
Physical Description
plastic (keys; trim material)
metal (case; clip material)
glass (display material)
overall: 5/16 in x 4 3/8 in x 1 1/8 in; .79502 cm x 11.1125 cm x 2.8575 cm
ID Number
catalog number
accession number
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


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