Technico LC 707M Handheld Electronic Calculator

Inventa Electronics Corporation of Taipei, Taiwan, filed for the trademark Technico, as used for electronic calculators, in August 1981, having used the term in commerce since 1975. The trademark was published in 1983 and abandoned in 1988. This example of the calculator was sold under the Technico trademark.
The credit card-sized calculator has a metal case with plastic trim and an array of twenty-four rectangular plastic keys. This includes ten digit keys, a decimal point key, four arithmetic function keys, a percentage key, and a square root key. Left of these are an on key, an off key, three memory keys, and a clear entry/clear key. Behind the keys to the left is an eight-digit LCD display. Text right of this reads: Technico (/) LC 707M. Text on the back of the calculator reads in part: MADE IN TAIWAN.
[Advertisement], Los Angeles Times, November 4, 1978, p. D9. A very similar Technico calculator, called the LC707 but said to have memory, advertised as on sale for $19.95.
[Advertisement], Washington Post, December 11, 1981, p. A20. Technico LC 707M advertised as on sale for $9.95.
[Advertisement], Washington Post, January 15, 1982, p. B2. Technico LC 707M advertised as on sale for $8.95.
Currently not on view
Object Name
electronic calculator
date made
ca 1982
Inventa Electronics Corporation
Physical Description
metal (case material)
plastic (keys; trim material)
glass (display material)
overall: 1/4 in x 3 3/4 in x 2 1/8 in; .635 cm x 9.525 cm x 5.3975 cm
place made
ID Number
accession number
catalog number
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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