Electronics is a branch of electrical engineering and physical science dedicated to the study and application of electric currents, particularly those involving the manipulation of electrical signals. The field heavily utilizes semiconductor materials and components, such as transistors and diodes, to build circuits capable of processing, storing, and transmitting information. Core applications involve the design of complex systems that enable computation, radio communication, and specialized sensing capabilities. These devices facilitate global infrastructure, powering everything from automated measurement tools to advanced data processing architectures, while relying on principles of controlled electron flow within conductors and semi-conductors.