Electronics

Electronics is the science of electronic phenomena, devices and systems. It describes and applies the flow of electronics emitted from solids or liquids passing through vacuum, gases or semiconductors. Electronics as a science studies the properties of electrons, the laws of their motion, and the laws of the transformation of various kinds of energy through the media of electrons. The basic elements in electronics are the electron tube and the transistor.

Although electronics is property regarded as only a section of electrical technology, electronic techniques are applied in many fields, including industry, communication, defence and entertaining. Due to its versatility it becomes increasingly difficult to draw clear dividing lines between electronics and other branches of electrical technology.

While physical electronics is the science of electronic processes, industrial electronics deals with the technology of design, construction and application of electronic devices. The industrial applications of electronics include control gauging, counting and measuring speed regulations, and many others.

The invention of electronic device is known to have become a new important phase in the development of electrical engineering. It considerably enlarged the application of electrical energy for various industrial purposes. The invention of the vacuum tube made radio-broadcasting possible and later on - telecasting. The researches in the field of electronics gave us radar devices, computers, tape recorders, betatron and a lot of medical tools. Semiconductor devices which replaced electron tubes reduce the size of instruments.

A great advance in electronics is considered to be connected with the appearance of the transistor. The use of the transistor is likely to be the first step in miniaturization of electronic devices and increased the large of their application. The introduction of the transistor in 1948 is supposed to be the beginning of the evolution of microelectronics which led in the late 1970s to the development of large-scale integration circuits. Now hundred of circuits can be packed on the one square inch and there seems to be no limit to it.

Electronics is evident to have made a great contribution to automation. It has extended the range of automatic control in large-scale industrial operations and made the processing of information rapid. Electronic computers have provided the basis for the construction of automatic lines, automated units, shops and whole plants, tools with programmed control, robots and manipulators.

The steering of big shops, jet planes, interplanetary rockets is controlled by electronic devices. Radio-electronic systems ensure reliable communication with space stations at distances amounting to scores of kilometers. Hundreds of electronic devices perform various tasks on board every satellite and spaceship. Electronics penetrated into all the spheres of human activity from household appliances to artificial intelligence and search of outerspace civilizations.

Such advantages of electronic devices as microscopic size, high speed, low cost and reliability are likely to have no competitor. No wonder electronic technology is most dynamic technology of the present industrial age. Electronics is sure to make still greater progress in the nearest future and help humanity gain new victories in science and engineering.

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