Electronics technicians help design, develop, test, manufacture, install, and repair electrical and electronic equipment such as communication equipment, medical monitoring devices, navigational equipment, and computers. They may be employed in product evaluation and testing, using measuring and diagnostic devices to adjust, test, and repair equipment. Electronics technicians may also work as sales workers or field representatives for manufacturers, wholesalers, or retailers giving advice on the installation, operation, and maintenance of complex equipment and may write specifications and technical manuals. Electronics technicians represent over 33% of all engineering technicians in the U.S. In 2009, there were over 160,000 electronics technicians employed in the U.S. Electronics technicians are accredited by organizations such as the Electronics Technicians Association (ETA), or International Society of Certified Electronics Technicians (ISCET). Education and training Most employers prefer to hire electronics technicians with an associate degree or other post-secondary training in engineering technology. Training is available at technical institutes, at community colleges, at extension divisions of colleges and universities, at public and private vocational-technical schools, and in the Armed Forces. Naval electronics technicians are the largest group of engineering technicians in the military (see Electronics Technician (US Navy)). Many 2-year associate degree programs accredited by the Technology Accreditation Commission of the Accreditation Board for Engineering and Technology (ABET) include at least college algebra and trigonometry and one or two basic science courses. Depending on the specialty, more math or science may be required. About 200 ABET-accredited programs are offered in engineering technology specialities. ABET-accredited electronics technician programs usually require at least two mathematics courses and two physics courses in addition to the core competencies. Electronics technician curriculum generally consists of courses in basic electricity and electronics, including Ohm's Law, Parallel and Series Circuits, Magnetism, AC/DC Circuits, Capacitance, Inductance, Transformers, Resonance, Filters, Semiconductors, Transistors, Amplifiers, Integrated Circuits and Digital electronics. In addition to vocational learning outcomes associated with the study of electronics and control systems, graduates of electronics technician programs are also expected to have essential employability skills and meet certain general education learning outcomes. Individual schools largely determine the specific program structure, delivery methods, and other curriculum components to be used to assist students in achieving the required program outcomes. A significant component of course material includes laboratory experimentation. These lab courses and projects often represent up to 50% of the course material and are used to reinforce theoretical concepts associated with the study of electronics. Schools offering