Friday, July 2, 2010

what is electronics

This article is about electronics industry. For personal-use electronic devices, see consumer electronics. For scientific magazine, see Electronics (magazine).
Surface mount electronic components
Electronics is the branch of science and technology which makes use of the controlled motion of electrons through different media and vacuum. 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.

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, resistors, diodes, transistors, etc. Components are often categorized as active (e.g. transistors and thyristors) or passive (e.g. resistors and capacitors)

Computer engineering


Computer engineering, also called electrical & computer engineering, computer science & engineering, or computer systems engineering, is a discipline that combines both electrical engineering and computer science. Computer engineers usually have training in electronic engineering, software design and hardware-software integration instead of only software engineering or electronic engineering. Computer engineers are involved in many aspects of computing, from the design of individual microprocessors, personal computers, and supercomputers, to circuit design. This field of engineering not only focuses on how computer systems themselves work, but also how they integrate into the larger picture.


Usual tasks involving computer engineers include writing software and firmware for embedded microcontrollers, designing VLSI chips, designing analog sensors, designing mixed signal circuit boards, and designing operating systems. Computer engineers are also suited for robotics research, which relies heavily on using digital systems to control and monitor electrical systems like motors, communications, and sensors.

Introduction

Computers!! - are slowly becoming a quintessential aspect which can be found everywhere; i,e in car engines, watches, microwave ovens, telephones, video games, x-ray machines, ATM's, touching every facet of our lives. Due to the rapid growth of Information Technology, computer industry has become one of the fastest growing segments of our economy. As a result, there exists a huge demand for Computer engineering professionals for the development of faster hardware components, new communication systems and software. Here comes the importance of Computer Engineering. Computer Engineering involves designing and testing of computer components. It is a branch of Engineering, which studies elements from both electrical engineering and computer science angles, combining the principle and techniques of these two for the making and development of computer and computer-based systems. Professionals who work with computer hardware and software are termed as Computer Engineers.

Computer engineers are a part of a team who apply their knowledge of mathematics and science for the design and development of a computer. Those who deal with the computer equipment as such, are termed as computer hardware engineers and those who deal with the computer programs are called computer software engineers.
Computer software or software is a collection of computer programs, procedures and documentation that performs the major tasks on a computer system. Software engineers should have strong programming skills as they are concerned with the design and development of many types of software, including computer games, word processing and business applications, operating systems and network distribution and compilers, which convert programs to machine language for execution on a computer.

Hardware engineers are involved in the research, designing, testing, manufacturing and installation of computer hardware such as computer chips, circuit boards, computer systems and related equipments. Their wor


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