Material Provided by JNTU World
It is a stable elementary particle with a charge of negative electricity, found in all atoms
and acting as the primary carrier of electricity in solids.
Electronics is the movement of electrons in a vacuum, gas, semiconductor, etc., in
devices in which the flow is controlled and utilized.
Electronics deals with electrical circuits that involve active electrical components such as
vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection
An electronic component is any physical entity in an electronic system used to affect the
electrons or their associated fields in a manner consistent with the intended function of the
electronic system. Components are generally intended to be connected together, usually by being
soldered to a printed circuit board (PCB), to create an electronic circuit with a particular function
(for example an amplifier, radio receiver, or oscillator). Components may be packaged singly, or
in more complex groups as integrated circuits. Some common electronic components are
capacitors, inductors, resistors, diodes, transistors, etc. Components are often categorized as
active (e.g. transistors and thyristors) or passive (e.g. resistors and capacitors).
Circuits and components can be divided into two groups: analog and digital. A
particular device may consist of circuitry that has one or the other or a mix of the two types.