Electronics Engg

Electronics Engg.



The modern discipline of electronic engineering was to a large extent born out of radio and television development and from the large amount of Second World War development of defence systems and weapons. In the interwar years, the subject was known as radio engineering and it was only in the late 1950s that the term electronic engineering started to emerge. In the UK, the subject of electronic engineering became distinct from electrical engineering as a university degree subject around 1960. Students of electronics and related subjects like radio and telecommunications before this time had to enroll in the electrical engineering department of the university as no university had departments of electronics. Electrical engineering was the nearest subject with which electronic engineering could be aligned, although the similarities in subjects covered (except mathematics and electromagnetism) lasted only for the first year of the three-year course.

Early electronics: In 1893, Nikola Tesla made the first public demonstration of radio communication. Addressing the Franklin Institute in Philadelphia and the National Electric Light Association, he described and demonstrated in detail the principles of radio communication. In 1896, Guglielmo Marconi went on to develop a practical and widely used radio system. In 1904, John Ambrose Fleming, the first professor of electrical Engineering at University College London, invented the first radio tube, the diode. One year later, in 1906, Robert von Lieben and Lee De Forest independently developed the amplifier tube, called the triode.

Electronics is often considered to have begun when Lee De Forest invented the vacuum tube in 1907 . Within 10 years, his device was used in radio transmitters and receivers as well as systems for long distance telephone calls. Vacuum tubes remained the preferred amplifying device for 40 years, until researchers working for William Shockley at Bell Labs invented the transistor in 1947 . In the following years, transistors made small portable radios, or transistor radios, possible as well as allowing more powerful mainframe computers to be built. Transistors were smaller and required lower voltages than vacuum tubes to work.In the interwar years the subject of electronics was dominated by the worldwide interest in radio and to some extent telephone and telegraph communications. The terms 'wireless' and 'radio' were then used to refer to anything electronic. There were indeed few non-military applications of electronics beyond radio at that time until the advent of television.

The subject was not even offered as a separate university degree subject until about 1960.

Prior to the second world war, the subject was commonly known as 'radio engineering' and basically was restricted to aspects of communications and RADAR, commercial radio and early television. At this time, study of radio engineering at universities could only be undertaken as part of a physics degree. Later, in post war years, as consumer devices began to be developed, the field broadened to include modern TV, audio systems, Hi-Fi and latterly computers and microprocessors. In the mid to late 1950s, the term radio engineering gradually gave way to the name electronic engineering, which then became a stand alone university degree subject, usually taught alongside electrical engineering with which it had become associated due to some similarities.

Before the invention of the integrated circuit in 1959, electronic circuits were constructed from discrete components that could be manipulated by hand. These non-integrated circuits consumed much space and power, were prone to failure and were limited in speed although they are still common in simple applications. By contrast, integrated circuits packed a large number — often millions — of tiny electrical components, mainly transistors, into a small chip around the size of a coin.





Comments on this page:
Comment posted by WilbCeld( milotry-rx.com ), 06/15/2017 at 1:02pm (UTC):
One was a licensed hotel made up of a collection of simple thatched chalets in a palm grove besides the beach the other was inland set on a rise above a vanilla plantation. <a href=http://yourcashloan24.com>payday loan</a> comformszmzcuafyxokdefentsourcewordpress relnofollowFill out my Wufoo forma Copyright Alternative Directions Inc.System per sale below cbests opteck is like any other s apply for full time and part free binary trading sites ea to make you money winning bollinger strategy make money online stepbystep guide pets at home acquires veterinary business vetspets.Can You Get High Offof Keflex <a href=http://kamagra-online-fast.kamagpills.com>Kamagra Online Fast</a> Amoxicillin A 45 Picture Tadalafil Pas Cher Canada <a href=http://etrobax.com>online pharmacy</a> Tabletten Viagra Alli Shopping <a href=http://leviplus.com/cheapest-levitra.php>Cheapest Levitra</a> Buy Proplanalol Online Uk Levitra Rezeptpflichtig <a href=http://need-to-order-cialis.ordercial.com>Need To Order Cialis</a> Benzac Ac Buy Cheap Bupropion 150mg In Usa <a href=http://buylevitraeufast.com/levitra-tablets.php>Levitra Tablets</a> Antibiotics Keflex Levitra Orosolubile Prezzo In Farmacia <a href=http://levipills.com/best-levitra-generic.php>Best Levitra Generic</a> Progesterone No Doctors Consult Mastercard Accepted Cash Delivery How Effective Cephalexin For Toothache <a href=http://priligy-dapoxetine-60mg.prilipills.com>Priligy Dapoxetine 60mg</a> Acheter Cialis Sur Paris Generic Levaquin Tavanic Tablet <a href=http://cialcheap.com/online-cialis.php>Online Cialis</a> Levaquin Vs Amoxicillin Osu Viagra Precio Farmacia <a href=http://levicost.com>best site to buy levitra</a> Propecia Sample Pack Dove Comprare Il Cialis On Line <a href=http://etrobax.com>online pharmacy</a> Order Cialis Online Usa



Add comment to this page:
Your Name:
Your Email address:
Your website URL:
Your message:

Member - Login
 
Username:
Password:
Advertisement
 
Forum
 
Sign in      Sign Up

   Want SMS Updates ?
 Just type ON < space > IERTUPDATES
  in your message box. And send it to 9870807070.

Director's Message
 

I am happy to see that Institute of Engineering & Rural Technology (iert) is taking a healthy and is working towards the objective of becoming one of the trend setters in the field of engineering.

Current Notice
 
Important Councelling Instruction 2012.
           
            IERT Diploma Entrance Examination Result 2012.
           
            IERT Management Diploma 2 years Entrance Exam Result 2012.
           
            IERT PDCA 3semester Entrance Examination Result 2012.
           
View Notice Board
Performance :
 
Give vote to the Campus Placements.
75-80%
60-75%
Below 60%
80-95%

(View results)
 
There have been 1820961 visitors (6433577 hits) on this page! - SUMIT SINGH
=> Do you also want a homepage for free? Then click here! <=
© Institute Of Engineering And Rural Technology, Allahabad -2012.
Contact Us      |   Copyright      |   Advertisement      |   Satellite View      |   Developer    
    Start Chat: Click blue Strip (24 X 7 support)