Teal K80M Calculator
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The following is information received from Nigel Tout of www.vintagecalculators.com
"I believe that this model was made in Japan, probably by TEAL (Tokyo Electron Applications Laboratory - see http://www.vintagecalculators.com/html/teal.html) as their model K80M (though there appear to be two slightly different varieties with this model number) and sold in the U.S.A. and Europe under several names by different marketing companies. See attached image from an eBay auction several years ago.
Some names that it was sold under include:
This was sold mail-order by J.T.A. of 7 Weir Road, Balham, London, SW 12.
Weltelektrik - See http://www.vintagecalculators.com/html/calculator_photo_library_w.html"
Many thanks to Nigel Tout foir the above and the Teal calculator photograph
TEAL stands for Tokyo Electron Applications Laboratory, of Tokyo, Japan. Sinichiro Osaki in his Pocket Calculator Museum at http://www.dentaku-museum.com/ gives the information that the company was founded in 1968, sold calculators under its own TEAL brand, and was a supplier to other companies including Toshiba and Hitachi. The company went out of business in 1978 after the price of calculators plummeted.
According to the instruction manual for a TEAL 826 calculator, TEAL Industries, Inc., of Carson, California, U.S.A., was a subsidiary of Tokyo Applications Laboratory, Ltd. It marketed a range of calculators in the 1970s, in the U.S.A. and Europe under the Teal name, including one of the first solar-powered calculators the Teal Photon.
To confuse things a little further, Tealtronic was the trade name of a British company which marketed some Japanese-made hand-held calculators in Europe under the that name. See the Tealtronic SM-8.
As a result it would appear to be a Teal K80M see http://www.vintagecalculators.com/tealk80m.JPG
K-80M, 4 function, 8 digits orange gas discharge in separate tubes, 4-C rep batt, 4.8x8.6", switches for constant and decimal place, battery meter, date unknown,?), similar to Xonex model
It has made in Japan on the back Operation Outline plate on the back with a Serial Number of 259575
Believed to be circa 1970
9 Digit display
Dimensions: 21.5 cm X 12 cm. 3.3 cm deep
This exhibit has a reference ID of CH2697. Please quote this reference ID in any communication with the Centre for Computing History.