Sharp QT-8D
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The Sharp QT-8D Micro Compet is a small electronic desktop calculator marketed by Sharp Corporation. It was the first mass-produced calculator to have its logic circuitry entirely implemented with LSI
Sharp QT-8D Micro Compet front view
Sharp QT-8D Micro Compet Main PCB
Facit 1115J and Addo-X 9354
Facit
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Facit was an industrial corporation and manufacturer of office products including furniture. It was based in Åtvidaberg, Sweden, and founded in 1922 as AB Åtvidabergs Industrier. Facit AB, a manufactu
Sharp QT-8D
…mass-produced hand-held electronic calculators, introduced in 1971. Sharp also built OEM versions of the QT-8D for the Swedish office machine company Facit and its subsidiary Addo, which sold them as the Facit 1115 and the Addo-X 9354. These had the same internals as the QT-8D but used a different case and…
Old brick advert of Facit-Odhner, New York. (Facit-Odhner was a sub-sidiary of Facit)
Facit calculating machine, 1954
Elof Ericsson (1887–1961), founder in 1922 of AB Åtvidabergs Industrier. Photo from 1937.