Here comes breadboards for our rescue! They are part of very advance method of building test circuit. In the both the case some change is required but due to permanent nature, change is very difficult. For example in a case where you made some mistake or just want to make any improvement to the circuit. But during testing this much rigidness is often very irritating.
In general purpose PCB, components are placed then soldered, this makes them permanent on their position. A bread board offers more flexibility while prototyping. In this article I will introduce you to one more prototyping tool, the breadboard. In the last article I discussed about the general purpose PCBs which helps us build prototypes of our circuits.