Casio Computer Co., Ltd.[note 1] (カシオ計算機株式会社,Kashio Keisanki Kabushiki-gaisha) is a Japanesemultinational electronics manufacturing corporation headquartered inShibuya,Tokyo, Japan. Its products includecalculators,mobile phones,digital cameras,electronic musical instruments, andanalogue anddigital watches. It was founded in 1946, and in 1957 introduced the first entirely compact electronic calculator. It was an early digital camera innovator, and during the 1980s and 1990s, the company developed numerous affordable home electronic keyboards for musicians along with introducing the first mass-produced digital watches.
Casio was established as Kashio Seisakujo in April 1946 byTadao Kashio [ja] (1917–1993), anengineer specializing in fabrication technology.[1] Kashio's first major product was the yubiwa pipe, a finger ring that would hold acigarette, allowing the wearer tosmoke the cigarette down to its nub while also leaving the wearer's hands free.[6] Japan was impoverished immediately followingWorld War II, so cigarettes were valuable, and the invention was a success.
After seeing the electric calculators at the first Business Show inGinza, Tokyo, in 1949, Kashio and his younger brothers (Toshio, Kazuo, and Yukio) used their profits from the yubiwa pipe to develop their calculators. Most of the calculators at that time worked using gears and could be operated by hand using a crank or using a motor (seeadding machine).
Casio's model 14-A, produced in 1957, was Japan's first electronic calculator
Toshio possessed some knowledge of electronics and set out to make a calculator usingsolenoids. After dozens of prototypes were tested, the desk-sized calculator was finished in 1954 and was Japan's first electro-mechanical calculator. One of the central and more important innovations of the calculator was its adoption of the 10-key number pad; at that time other calculators were using a "full keypad", which meant that each place in the number (1s, 10s, 100s, etc. ...) had nine keys. Another distinguishing innovation was the use of a single display window instead of the three display windows (one for each argument and one for the answer) used in other calculators.[1][7]
Casio Computer Co., Ltd. was formed in June 1957.[1] That year, Casio released the Model 14-A, sold for 485,000yen,[8] the first all-electric compact calculator, which was based on relay technology.[9]
In 1974, Casio released their first digital wristwatch, called the CASIOTRON. It was the first wristwatch in the world to include an automatic calendar function.[10] In 1977, they released aretro-futuristic wristwatch, called the F100. The watch was one of the first wristwatches in the world to be made primarily out ofresin, making it very light compared to other companies' heavy metal-made watches and enabling future Casio watches to entermass production more easily.[11] In 1989, Casio released another important wristwatch: theF-91W, the most sold wristwatch in the world with an annual production of 3 million units.[12] During the 1980s and 1990s, Casio introduced a wide range of innovative watches featuring advanced and futuristic functions for their time. Among these was the Casio AT-550, a model equipped with a built-in calculator and a touchscreen interface, reflecting the company’s emphasis on integrating emerging digital technologies into wristwatch design.[13]
In the 1980s, Casio's budget electronic instruments and its line of affordable home electronicmusical keyboard instruments became popular. The company also became well known for the wide variety and innovation of itswristwatches. It was one of the earliest manufacturers ofquartz watches, both digital and analog. It also began sellingcalculator watches during this time. Casio also introduced one of the first watches that could display the time in many differenttime zones of the world and with features like recording temperature, atmospheric-pressure and altitude. In the later years, Casio's wristwatches were fitted with receivers to synchronise with radio towers around the world andGlobal Positioning System for timekeeping accuracy.
A number of notable digital camera innovations have also been made by Casio, including the QV-10, the first consumer digital camera with aliquid-crystal display (LCD) on the back[14] (developed by a team led by Hiroyuki Suetaka in 1995), the first consumer three-megapixel camera, the first true ultra-compact model, and the first digital camera to incorporate ceramic lens technology, usingLumicera.[15]
In the 1970s and 80s, Casio was best known for its electronic (including scientific) calculators, electronic musical instruments and affordable digital watches incorporating innovative technology. Today, Casio is most commonly known for making durable and reliable electronic products.[14] TheG-Shock range of shock-resistant watches is also very popular, with the original 1983 G-Shock DW-5000C being highly sought after by collectors. The scientific calculators made by Casio especially the CLASSWIZ series of calculators are known for being affordable while incorporating a host of functions as compared to their competitors.[18]
Casio also makes products for local markets, including "Prayer Compass" watch series designed to help Muslims pray on time and in the right direction.[19]