Electronics Engineering Primer

ELECTRONICS - the science dealing with the development and application of devices and systems involving the flow of electrons or other carriers of electric charge, in a vacuum, in gaseous media, in plasma, in semiconductors, in solid-state and/or in similar devices, including, but not limited to, applications involving optical, electromagnetic and other energy forms when transduced or converted into electronic signals. "excerpt from RA 9292 / SECTION 3"

source: Professional Regulation Commission