Calculator This led the way to the first credit-card-sized calculators, such as the Casio "Mini Card LC-78" of 1978, which could run for months of normal use on button cells. There were also improvements to the electronics inside the calculators. All of the logic functions of a calculator had been squeezed into the first "calculator on a chip" integrated circuits (ICs) in 1971, but this was leading edge technology of the time and yields were low and costs were high. Many calculators continued to use two or more ICs, especially the scientific and the programmable ones, into the late 1970s. The
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