Electronics is the study of the flow of charge through various
materials and devices such as semiconductors, resistors, inductors,
capacitors, nano-structures and vacuum tubes. Although considered to
be a theoretical branch of physics, the design and construction of
electronic circuits to solve practical problems is an essential
technique in the fields of electronic engineering and computer
engineering.

The study of new semiconductor devices and surrounding technology is
sometimes considered a branch of physics. This article focuses on
engineering aspects of electronics.