 This is called the breadboard. Now, this breadboard is divided into four different sections. This line separates each section. This is one section, second section, third section, fourth section. If you see, this section and this section are the same, and this section and this section are the same. So, what these different holes are there? These holes are there because you can easily insert the terminals of the components. So, if I say what is the orientation of this breadboard, you can see this 1, 2, 3, 4, 5. These holes are short. If I denote it in this particular page, if I say this, this is a template. This means all the holes are connected. Similarly, just below this, they are 1, 2, 3, 4, 5. These all sides are connected. That means, this all are short, this all are short, but this don't have any connection with this, like this. This don't have any connection with this, they are open. This is short, short circuit, this is open circuit. Similarly, if we go for the second one, this is again all short. Similarly, third one, all short, fourth, fifth. I am taking 1, 2, 3, 4, 5. 1, 2, 3, 4, 5. Similarly, below ones are again short. But how is the connection between this and this? If I represent it in this page, then this you can say all are short. That means, this entire line is a short circuit and this entire below line isn't. So, this is short. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. They are 10 sections. This 5 are short and this 5 are short. But this 5 are having no relation with this one. This 5 are different, this 5 are different. Similarly, this 5 have no relation with this one. So, this is entirely different. This is entirely different, this is entirely different. When you come to the second one, you can see 1, 2, 3, 4, 5 volts. All these are short. Means, they are something like this. So, all these are short. Again, 8, 1, 2, 3, 4, 5 volts. All these are short. But this and this have no connection. Means, they all are something like this. If you see, this carries on till the end. This carries on till the end. Same thing. Again, we have seen this is a big line. This is again a repetition of this. That means, same thing. Repetition. This is a repetition of this. But this and this have no connection. This and this have no connection. So, this will go on till the end. Similarly, this is a repetition of this. Means, having this 5 short, this 5 short. Again, having no connection with this 5 and the other 5. Means, this 5 and this 5. No connection with this. So, this is how our orientation of this line. So, we see this. The most important thing that we might have seen here. This is the gap of this line is much thicker than this 2. Why? You might have seen ICs. This is called IC. This is the only position in a breadboard where you can insert this IC. So, if I take this IC anywhere in this line, you can insert this. And pull it right over here and over. That basically, properly in this line. So, it got inserted. So, you can see that your IC can only be inserted in this heat line. You cannot insert IC here. You cannot insert IC here. Because all the things of the IC should be isolated from each other. So, this all are isolated. I have seen that connection. This is not connected to this. This is not connected to this. This is not connected to this. That's why this is not connected to this. This is not connected. All are isolated. Similarly, all are isolated. So, this is the only position where you can insert your IC. This is about the orientation of the breadboard. Thank you.