Basic about electronics

INTRODUCTION :

                    Electronics (coined from the word 'electron') is the branch of science and engineering dealing with the theory and use of a class of devices in which electrons are transported through a vacuum, gas or semiconductor. The motion of electrons in such devices, called electron devices, is usually controlled by electric fields. Diodes, triodes, transistors etc. are examples of electron devices Electronics can be broadly classified into two branches. physical electronics and electronic engineering. Physical electronics treats the motion of electrons in a vacuum, gas or and focusses on the physics of electron devices. The design, fabrication, and application of electron devices form the subject matter of electronic engineering. Electronics has inroads into many fields of science and technology, and has profoundly influenced the life of modern man. Modern computers and communication systems are intimately linked with advances in electronics.

     In Home, we use various electronics system :TVs,VCRs,CD players ,calculator, PC,telephone.
In communication system round -the -globe communication via microwave or fibre-optic links and satellite and access to internets have been possible with advances in electronics and many more.



           For better times, and at the times for worse, electronics has shaped our lives. Our living standards have improved, but we are also at the peril of deadly weapons that would not have appeared without the progress in electronics.

In the next post we will learn about some electronic components , their structure , working method and their use.