Thursday, 17 December 2020

Electronic devices 2


Electronic devices 2, a branch of physics and engineering that deals with controlling the flow of electrical charges in specific devices to achieve useful purposes. Electronic components (parts) are used in a wide range of products.


Such as radios, televisions, computers, video recorders simulators, hearing aids, medical devices, and many other products. The dependence on electronic products has increased in our time to the point that this era is often called the electronic age.


Electronics was originally concerned with describing the behavior of free electrons in vacuum vessels, and later this term was used to include the behavior of these electrons in gases, liquids, and solids. And in the end, it became a special branch of electrical engineering.


Electronic devices

It can be said that electrical engineering, which is concerned with studying the movement of electrons in conductors, is a branch of electronics that studies the movement of electrons wherever they appear.


The truth in all of this is that the concept of the electron is so general and so fundamental that it is impossible to outwardly limit the scope of this subject or its industrial applications.


Electronics is part of a wider field, that is, electricity. Electricity has two important components:


1- Electric current

2- Electrical voltages.


Electric current is the flow of electric charges, while electric voltages are a type of "pressure" (or force) that causes charges to move in one direction. One of the usual uses for electricity is to provide homes and institutions with power used to provide light and heat and to drive motors.


Electronics mainly deals with the use of current and voltages to carry electrical signals. An electrical signal is an electric current (or voltage) that is somehow pivoted to represent information. They may represent sounds, pictures, numbers, letters, computer instructions, or other information.


The signals can also be used to count objects, measure temperature and time, and detect radioactive chemicals.


Electronics relies on certain highly specialized components, such as transistors, and integrated circuits, which are part of nearly all electronic equipment. The value of such devices lies in their ability to process signals with great speed. Some components can respond to signals millions of times per second.


The field of microelectronics is concerned with the design and production of micro components - particularly integrated circuits - and electronic equipment that use such components. Manufacturers can produce millions of microscopic electronic components on a piece of material called a chip, no more than the size of a fingernail.

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