Electronics

related topics
{system, computer, user}
{math, number, function}
{math, energy, light}
{acid, form, water}
{theory, work, human}
{style, bgcolor, rowspan}
{@card@, make, design}

Electronics is the branch of science and technology which makes use of the controlled motion of electrons through different media. The ability to control electron flow is usually applied to information handling or device control. Electronics is distinct from electrical science and technology, which deals with the generation, distribution, control and application of electrical power. This distinction started around 1906 with the invention by Lee De Forest of the triode, which made electrical amplification possible with a non-mechanical device. Until 1950 this field was called "radio technology" because its principal application was the design and theory of radio transmitters, receivers and vacuum tubes.

Most electronic devices today use semiconductor components to perform electron control. The study of semiconductor devices and related technology is considered a branch of physics, whereas the design and construction of electronic circuits to solve practical problems come under electronics engineering. This article focuses on engineering aspects of electronics.

Contents

Electronic devices and components

An electronic component is any physical entity in an electronic system used to affect the electrons or their associated fields in a desired 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).

Full article ▸

related documents
Windows Me
Accelerated Graphics Port
Hercules emulator
Audio Video Interleave
Intelligent network
Apple Lisa
Amiga 500
Intel 8085
ISCSI
Windows 1.0
LINC
PCX
AOL Instant Messenger
XScale
Slave clock
Digital audio
Dial-up internet access
Parallel port
DECnet
ARCNET
Intel 8051
Internet Protocol
Shortwave
Java Message Service
Wearable computer
Game Boy line
Pocket PC
S/PDIF
Phantom circuit
Windows NT