In this video, we do a deep dive on the IC 555 timer. The timer IC, first invented by Hans Camenzind in 1971, is very useful in constructing timing signals according to our choice. However, the IC has many internal building blocks and thus it can be hard to understand how to use this timer. Hence, we take a look at each pin and block in detail. We understand the functioning of each block and it's importance in the overall structure. After watching this video, you'll be equipped to build different types of oscillators and multivibrators using the IC 555 timer.