Electronics | Devices, Facts, & History | Britannica
2024年12月24日 · Electronics, branch of physics and electrical engineering that deals with the emission, behaviour, and effects of electrons and with electronic devices. Electronics encompasses an exceptionally broad range of technology.
Electronics - Components, Circuits, Technology | Britannica
2024年12月24日 · Electronics - Components, Circuits, Technology: Since electronics is concerned with the control of the motion of electrons, one must keep in mind that electrons, being negatively charged, are attracted to positive charges and repelled by other negative charges.
electrical and electronics engineering - Encyclopedia Britannica
electrical and electronics engineering, the branch of engineering concerned with the practical applications of electricity in all its forms, including those of the field of electronics.
Electronics - Digital, Circuits, Components | Britannica
2024年12月24日 · Electronics - Digital, Circuits, Components: Computers understand only two numbers, 0 and 1, and do all their arithmetic operations in this binary mode. Many electrical and electronic devices have two states: they are either off or on.
Electronics - Semiconductor, Revolution, Technology | Britannica
2024年12月24日 · Electronics - Semiconductor, Revolution, Technology: The invention of the transistor in 1947 by John Bardeen, Walter H. Brattain, and William B. Shockley of the Bell research staff provided the first of a series of new devices with remarkable potential for expanding the utility of electronic equipment (see photograph).
Technology | Definition, Examples, Types, & Facts | Britannica
4 天之前 · Technology is the application of scientific knowledge to the practical aims of human life or, as it is sometimes phrased, to the change manipulation of the human environment. From hand tools to computers and engineering, technology encompasses it all.
electronics summary | Britannica
electronics, Branch of physics that deals with the emission, behaviour, and effects of electrons and with electronic devices. The beginnings of electronics can be traced to experiments with electricity. In the 1880s Thomas Alva Edison and others observed the flow of current between elements in an evacuated glass tube. A two-electrode vacuum ...
electronics - Kids | Britannica Kids | Homework Help
Electronics is a branch of the science called physics. It explains how electricity can be used to carry or process information. Many products are based on electronics. They include computers, digital cameras, radios, television sets, wireless telephones, and video games. Often these products themselves are called electronics.
History of Technology Timeline | Britannica
The first computers that emerged after World War II were gigantic, but, with advances in technology, especially in putting many transistors on a semiconductor chip, computers became both smaller and more powerful. Finally, they became small enough for home use.
Electronics - Circuits, Components, Signals | Britannica
2024年12月24日 · Electronics - Circuits, Components, Signals: Rectification, or conversion of alternating current (AC) to direct current (DC), is mentioned in the section The vacuum tube era. A diode, or two-terminal device, is required for this process.