Casio Computer Co. Ltd., Japan.
Casio was an early manufacturer of calculators electric and electronic calculators. It produced electric relay calculators in the 1950s and early 1960s and transistorised desktop calculators in the mid 1960s.
Casio pioneered low-cost hand-held electronic calculators in the early 1970s with the Casio Mini, and by producing innovative, well specified, high-quality calculators survived the calculator price wars of the mid-1970s and continues to be a major calculator manufacturer today.
History of Casio: In 1946 Kashio Tadao (who had been born in 1917) set up his own business called Kashio Seisakujo, in Mitaka, Tokyo, Japan. The company operated as a small subcontractor that made microscope parts and gears. However, in looking for products to manufacture, Tadao with one of his brothers, Toshio, developed a four-function mechanical calculator. From this followed relay calculators and then the transistorised calculators.
The Casio Computer Co., Ltd. was established on June 1, 1957 to develop and manufacture the relay calculators.
The whole fascinating story of Casio and its calculators is told at http://world.casio.com/corporate/history/.
A brief chronology of Casio products can be found at http://world.casio.com/corporate/history/chronology/.
From this the following summary of notable Casio calculators, with their launch dates (in Japan), has been extracted:
Casio calculators featured on this site
Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2025.
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