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
Rogers Vacuum Tube Company founded Toronto radio station CFRB in order to promote its invention of a batteryless radio receiver as well as demonstrate his invention of a radio transmitter using batteryless alternating current tubes making CFRB the first all-electric radio station in the world. Rogers Sr. died in 1939 and the company was sold in 1941 to Small Electric Motors Ltd., (which soon became the Canadian division of Dutch giant Royal Philips Electronics) which changed the name of the Rogers Majestic Corporation Limited to Standard Radio Ltd... In 1924 Edward S. Rogers Sr formed Rogers Radio Ltd of Toronto to manufacture radios. While