ELECTRONICS
Electronics, field of engineering and applied physics dealing with the design and application of devices, usually
ELECTRONIC circuits, the operation of which depends on the flow of electrons for the
generation, transmission, reception, and storage of information. The information can consist of voice or music (
audio signals) in a radio receiver, a picture on a television screen, or numbers and other data in a computer.
Electronic circuits provide different functions to process this information, including amplification of weak signals to a usable level; generation of radio
waves; extraction of information, such as the recovery of an audio
Signal from a radio wave (demodulation); control, such as the superimposition of an audio signal onto radio waves (modulation); and logic operations, such as the electronic processes taking place in computers.