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 In certain contexts such as higher education, scientific calculators have been superseded by graphing calculators, which offer a superset of scientific calculator functionality along with the ability to graph input data and write and store programs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
Peavey Electronics Peavey Electronics Peavey Electronics Corporation is an American company that designs, develops, manufactures and markets professional audio equipment. It is one of the largest audio equipment manufacturers in the world, headquartered in Meridian, Mississippi. Hartley Peavey founded Peavey Electronics, one of the world's largest manufacturers and suppliers of musical and professional audio equipment, in 1965, having built his first amplifier in 1957. Since its foundation, Peavey Electronics has been privately owned, and has grown from their humble beginnings in Hartley's basement in the 1950s. In 2011, "Inc." magazine profiled the global success story of music and audio innovator Hartley Peavey