Calculator watch financial functions (in the Casio CBA-10). Usually calculator watch operates with eight digits number, however, calculator watch can operate with 6 digits (for example, Casio C-801) or 10 digits (Casio CBA-10) numbers. Calculator watches first appeared in the mid 1970s introduced by Pulsar (1975, then a brand of the Hamilton Watch Company) and Hewlett Packard. Several watch manufacturers have made calculator watches over the years, such as Pulsar and Timex, but the Japanese electronics company Casio produced the largest variety of models. In the mid-1980s, Casio created the Databank calculator watch, which not only performed calculator functions, but also stored
Vestax Vestax The Vestax Corporation was a Japanese musical instrument, turntable and audio equipment firm founded by Hidesato Shiino in 1977. The company started by designing and manufacturing electronic guitars. In the 1980s, Vestax produced multitracks recorders and later move to making DJ mixers, professional turntables, compact disc players and signal processors. Debt troubles lead to the company's bankruptcy at the end of 2014. The Vestax Corporation of Japan began in 1977 as a designer and manufacturer of electronic guitars. In the 1980s Vestax introduced a series of cassette-based multitracks, including the Vestax MR66, to challenge established products from Fostex, Yamaha