Electrical engineering is an amazingly broad-based and rapidly growing discipline.
It encompasses everything from batteries and power supplies to crystal fabrication and autonomous robots. Electrical engineers design, produce, study and operate all manner of devices and systems that use electric and electromagnetic energy. Electrical engineers work on systems at the macro scale of electric power grids and at the micro scale of nanotechnology. Contemporary society is in the midst of an information revolution, created in large part from the fruits of electrical engineering. The field has grown from its roots in power systems to branches in communications systems, automatic controls, signal processing, semiconductor physics, electronic circuit synthesis, optics, computer science, and artificial intelligence.