Electronics is the study and use of electrical devices that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors. The pure study of such devices is considered as a branch of physics, while the design and construction of electronic circuits to solve practical problems is called electronic engineering.
The main uses of electronic circuits are the controlling, processing and distribution of information, and the conversion and distribution of electromagnetic power. Both of these uses involve the creation or detection of electromagnetic fields and electric currents.
While electricity had been used for some time to transmit data over telegraphs and telephones, the development of electronics truly began in earnest with the advent of radio. Today, electronic devices perform a much wider variety of tasks.
One way of looking at an electronic system is to divide it into the following parts:
See also: computer engineering, electrical engineering, integrated circuit, list of electronics topics, microelectronics, optoelectronics, point-to-point construction, printed circuit board, semiconductor, transducer, wire wrap
|Table of contents|
2 Interconnecting Electronic Components
3 Passive Components
4 Active Components (solid-state)
5 Active Components (thermionic)
6 Electromechanical Sensors and Actuators
7 Thermoelectric devices
8 Photoelectric devices
9 Antennae etc.
10 Analog circuits
11 Digital circuits
12 Mixed-signal circuits
14 Electronics Theory
15 See also
16 External links
Electronic Test Equipment
Interconnecting Electronic Components
Active Components (solid-state)
Active Components (thermionic)
Electromechanical Sensors and Actuators
Most analog electronic appliances, such as radio receivers, are constructed from arrays of a few types of circuits.
Associated with all electronic circuits is noise.
Types of noise include