Integrated Circuit's (IC's) ...

Integraed Circuit Is Commonly Named As IC's ... I think you hear this term so many times , but not familier with this:) Here I will give breif introduction about IC's ...

First Ic made By texas instrument in 1958. With the help of one single ic we can perform number of task , no need to large number of transistor, diode ,resitor etc... This is the part of nano technology.




U hear the name of transisitor and vaccuum tubes, vacuum tubes are fitted in our old TV's . If u ever open ur very old tv u can see Vacuum tubes. They are very noisy and large devices and also produce so large heat. That is why IC's Invention comes.:)

One day in late July, Jack Kilby was sitting alone at Texas Instruments. He had been hired only a couple of months earlier and so he wasn't able to take vacation time when practically everyone else did. The halls were deserted, and he had lots of time to think. It suddenly occurred to him that all parts of a circuit, not just the transistor, could be made out of silicon. At the time, nobody was making capacitors or resistors out of semiconductors. If it could be done then the entire circuit could be built out of a single crystal -- making it smaller and much easier to produce. Kilby's boss liked the idea, and told him to get to work. By September 12, Kilby had built a working model, and on February 6, Texas Instruments filed a patent. Their first "Solid Circuit" the size of a pencil point, was shown off for the first time in March.


But over in California, another man had similar ideas. In January of 1959, Robert Noyce was working at the small Fairchild Semiconductor startup company. He also realized a whole circuit could be made on a single chip. While Kilby had hammered out the details of making individual components, Noyce thought of a much better way to connect the parts. That spring, Fairchild began a push to build what they called "unitary circuits" and they also applied for a patent on the idea. Knowing that TI had already filed a patent on something similar, Fairchild wrote out a highly detailed application, hoping that it wouldn't infringe on TI 's similar device.

All that detail paid off. On April 25, 1961, the patent office awarded the first patent for an integrated circuit to Robert Noyce while Kilby's application was still being analyzed. Today, both men are acknowledged as having independently conceived of the idea.


Modern Ic :-


Now the part comes function of different pins and how we identify :-

 1. First how we identify the Ic name :-

 Lets take the example of this Ic :-




Here it is written " D8086"

Every word has its own meaning :- this is a Ic number 8086 , for this time forgot all other things because for remebering its need lot of practice , now try only find the ic name :)

second thing here it is written:- " Intel 1978" mean it is made by intel in 1978 , but this thing is not written on every Ic.

Lets take another example For better understanding:-


Here written " LM 555 CN" , meaning the name of this IC is 555 and the meaning of LM is depend upon consturcion company every company has its own resgistered code name. and "CN" it tell about the packaging part of IC , Like P for plastic packaging.

For ur knowledge This IC is Commonly Known As 555 Timer.

As i already told u for the time only try to find the IC name Forgot rest thing:).


2. How To Identify Pin Number :-


Take the example of 555 IC , I think figure is fully explained by it self :-
Follow these steps :-

1. Check the Cut on the outer body of Ic , it is of two typemay be like circle as shown in figure or like a "U" shape like in new IC's.

2. set the postion of IC such that cut comes on the left side:) T fig as reference..

3. now start reading the pins in the series as in figure ie. below the cut it is Ist pin and so on ... when one side pins end then start the counting just opposite to side and countinuously go on...

Hope now u understand how count IC Pins. :)


3 Identify The Function of Pins :-


After You identify the pin number , now ques is what is the function of Pin1 ,2 ,3....

these function u will know from Data sheet of IC , that u found on internet just search it like " Data sheet of 555 " and check the variuos functing of diffeent Pins.


These three things are sufficent for using the IC :)

Hope u understand all the above:) if any problem just ask :) I make this tutorial by consider that u dont know anthing About such things(IC's) . So it be very simple as it can do:)

Gud Luck!


Regards,
Manan Saini ...