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
Sumlock ANITA calculator other products, such as taximeters. In 1976 Rockwell decided to exit the calculator market, by which time cheap calculators had markedly reduced the profitability of the industry. Sumlock Anita Electronics was closed down and the ANITA name was sold to a marketing company and soon disappeared. The rest of the Bell Punch Company, which was completely independent of Rockwell, continued in business to about 1986 when it was closed down. Sumlock-Anita Electronics also assembled in Britain some of the Rockwell hand-held calculators, including Rockwell models "8R", "10R", "18R", "20R", "21R", "30R", "31R". The "Panaplex" is a gas-discharge display, using 7