Portal:Electronics

From Wikipedia, the free encyclopedia

The Electronics Portal

Modern surface-mount electronic components on a printed circuit board, with a large integrated circuit at the top

Electronics is a scientific and engineering discipline that studies and applies the principles of physics to design, create, and operate devices that manipulate electrons and other electrically charged particles. Electronics is a subfield of electrical engineering, but it differs from it in that it focuses on using active devices such as transistors, diodes, and integrated circuits to control and amplify the flow of electric current and to convert it from one form to another, such as from alternating current (AC) to direct current (DC) or from analog signals to digital signals. Electronics also encompasses the fields of microelectronics, nanoelectronics, optoelectronics, and quantum electronics, which deal with the fabrication and application of electronic devices at microscopic, nanoscopic, optical, and quantum scales.

Electronics have a profound impact on various aspects of modern society and culture, such as telecommunications, entertainment, education, health care, industry, and security. The main driving force behind the advancement of electronics is the semiconductor industry, which produces the basic materials and components for electronic devices and circuits. The semiconductor industry is one of the largest and most profitable sectors in the global economy, with annual revenues exceeding $481 billion in 2018. The electronics industry also encompasses other sectors that rely on electronic devices and systems, such as e-commerce, which generated over $29 trillion in online sales in 2017. (Full article...)

Good articles - load new batch

These are Good articles, which meet a core set of high editorial standards.

Selected image


Credit: User:BillC
Idealised single-phase transformer showing path of magnetic flux through the core.

Selected biography

Shannon c. 1950s

Claude Elwood Shannon (April 30, 1916 – February 24, 2001) was an American mathematician, electrical engineer, computer scientist and cryptographer known as the "father of information theory". He was the first to describe the Boolean gates (electronic circuits) that are essential to all digital electronic circuits, and he built the first machine learning device, thus founding the field of artificial intelligence. He is credited alongside George Boole for laying the foundations of the Information Age.

As a 21-year-old master's degree student at the Massachusetts Institute of Technology (MIT), he wrote his thesis demonstrating that electrical applications of Boolean algebra could construct any logical numerical relationship, thereby establishing the theory behind digital computing and digital circuits. In 1987, Howard Gardner called his thesis "possibly the most important, and also the most famous, master's thesis of the century", and Herman Goldstine described it as "surely ... one of the most important master's theses ever written ... It helped to change digital circuit design from an art to a science." (Full article...)

Related portals

Selected article

Joule's laws are a set of two laws concerning the heat produced by a current and the energy dependence of an ideal gas to that of pressure, volume, and temperature, respecetively. Joule's first law, also known as the Joule effect, is a physical law expressing the relationship between the heat generated by the current flowing through a conductor. The heating effect of conductors carrying currents is known as Joule heating, named for James Prescott Joule. It is expressed as:

Where Q is the heat generated by a constant current I flowing through a conductor of electrical resistance R, for a time t.

Joule's second law states that the internal energy of an ideal gas is independent of its volume and pressure, depending only its temperature.

Did you know (auto-generated) - load new batch

Consumer showcase

A camcorder is a portable electronic device for recording video images and audio onto an internal storage device. The camcorder contains both a video camera and (traditionally) a videocassette recorder in one unit, hence its portmanteau name. This compares to previous technology where they would be separate. The earliest camcorders, developed by companies such as JVC, Sony, and Kodak, used analog videotape, but since the mid-1990s, camcorders recording digital video have become the norm.

Selected design

WikiProjects

Main topics


Subcategories

Category puzzle
Category puzzle
Select [►] to view subcategories

Associated Wikimedia

The following Wikimedia Foundation sister projects provide more on this subject:

Discover Wikipedia using portals

Purge server cache