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
Crescent Electric Supply Co. Crescent Electric Supply Co. Crescent Electric Supply Company is an American electrical hardware supplier. It was founded in 1919 in Dubuque, Iowa, but is currently headquartered in East Dubuque, Illinois. One of the largest companies of its kind, Crescent Electric Supply was ranked by "Forbes" as the 435th largest privately held company in the United States in 2008. Electric contractor Titus B. Schmid founded Crescent Electric Supply in Dubuque, Iowa, in April 1919. Schmid believed that he could deliver goods through the river from St. Louis or Minneapolis to Dubuque faster then existing electronics manufacturers. A 1957 article in "BusinessWeek"