A bread board is also called protoboard is used to make temporary circuits for prototyping. Originally it was a wooden bread board when electronic devices were huge and bulky, people would take their mom’s breadboard, a few nails and start connecting wires onto the board to give themselves a platform on which to build their circuits. In the 1970’s the solderless breadboard became popular and these days the term “breadboard” is commonly used.
Prototyping is the process of testing out new idea by creating an introductory model from which other models are created or copied, and it is one of the most common uses for breadboards. If someone is not sure how a circuit will work under a given set of parameters, it is best to build a prototype and test it out.
This property of solder less breadboards makes them easy to use for creating temporary prototypes and working with circuit designs. Older breadboard types did not have this property.
For college and university students bread boards are best place to start learning electronics and circuit .Breadboards can accommodate both simple circuits and complex circuits as well and this is the main advantage of breadboards.
Another common use of breadboards is testing out new parts, such as Integrated circuits (ICs). When you are trying to figure out how a part works and constantly rewiring things, you don’t want to have to solder your connections each time.
The breadboard contains spring clip contacts typically arranged in matrices with certain blocks of clips already wired together. The components and jump wires (assorted wire lengths with pins at both ends) are plugged into the clips to create the circuit patterns. The boards also typically include metal strips along the side that are used for common power rails and signal buses.
The bread board can be divided into three parts power terminals, power buss, adjoining connections points. The power bus has a function to distribute a voltage or ground throughout the breadboard. The power bus is divided into two rows of holes. Each row is further divided into two groups of 25 connected holes. All 25 holes connect to same electrical connection.
The row consists of groups of five holes. The five holes share the same electrical connections. Jumpers proved power ground to the IC.
The main advantage of breadboard is that it allows you to build, test and refine the circuit without any problem and avoids the expense of full production of the circuit on a printed circuit board.