Electrical Engineers design, develop, test, install, and supervise the manufacturing of electrical equipment such as electric motors, radar and navigation systems, communication systems, transportation equipment and vehicles, and power generation equipment. In addition, they also design and develop electronic equipment, such as broadcast and communication systems – from portable music players to global positioning systems (GPS). Electrical engineering may also include electronic engineering. Electronic engineering typically deals with the study of electronic systems and problems associated with these systems, such as electric power transmission and electrical machines.