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 In certain contexts such as higher education, scientific calculators have been superseded by graphing calculators, which offer a superset of scientific calculator functionality along with the ability to graph input data and write and store programs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
Plug-in electric vehicles in the United States occupancy. The study concluded that the increased environmental impacts of manufacturing the battery electric technology is more than offset with increased environmental performance during operational life. For the assessment, the study used the average electricity mix of the U.S. grid in 2014. In the 2014 mid-size cars category, the Leaf also ranked as the best all-around performance, best environmental and best social performance. The Ford Focus Electric, within the 2014 compact cars category, ranked as the best all-around performance, best environmental and best social performance. The Tesla Model S ranked as the best environmental performance in the 2014 full-size cars