Scientific calculator was the first company to produce one (Casio fx-7000G). Scientific calculator A scientific calculator is a type of electronic calculator, usually but not always handheld, designed to calculate problems in science, engineering, and mathematics. They have almost completely replaced slide rules in traditional applications, and are widely used in both education and professional settings. In certain contexts such as higher education, scientific calculators have been superseded by graphing calculators, which offer a superset of scientific calculator functionality along with the ability to graph input data and write and store programs for the device. There is also some overlap with 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"