Printed Circuit Board

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 Electronics = the scientific study of the behavior of the electron and its applications, such as computers, medicine and automation

conductive = having the property of conducting(=transmitting) something (especially heat or electricity) insulator (adj insulated) = a substance that blocks and resists electricity charge = energy stored chemically for conversion into electricity electrolyte = a medium(=substance through which physical forces are transmitted) containing ions that is electrically conducting through the movement of those ions, but not conducting electrons casing = a cover or shell that protects or encloses something band = a flat, thin strip or loop of material, used as a fastener(=a device that closes or secures something) current = a flow of electricity which results from the ordered directional movement of electrically charged particles See also Parallel Electrical Circuit
EFL subset that concentrates more on language in context than on grammar and language structures. It covers topics from accounting or computer science to tourism and business management. "Specific" means the studying through a field that is already known and relevant to a student.