Learn Electronics with Arduino

Feb 4, 2017

Component Overview: Breadboard


What is breadboard?

Breadboard is a construction base used for prototyping of electronics.  It looks like a rectangular plastic board with lots of holes on it.  The Fig 1 shows a breadboard from top.

Why is it called a breadboard?

In the early days, when people wanted to construct a prototype they would do so on a flat wooden board by driving nails into it and then wrapping wires around the nails to connect to the various components.  A flat wooden board that was most handy in those days was an actual bread board on which bread was sliced. As components become smaller and electronics become more popular people started improving their prototyping base.  In the 1970s, solderless protoying board was invented. As soldering was not required, this board could be easily reused and become popular. However the name stuck from the early days of electronics.

Internals of breadboard

The internal connections of breadboard are straight forward.  The green lines in Fig 1 shows the internal connections of a breadboard. It shows a half+ size breadboard.  
Fig 1. Breadboard internal connection
The set of 5 holes as show in the diagram above are connected with other. except the sets which make up the horizontal line. This set of 5 holes are called terminal strips. This is where all the components go in. The horizontal lines on the top and the bottom of the bread board are called bus lines and the whole horizontal line is connected.  These are usually used to power the components. All the holes take in the 24 AWG size wires.  These wires are called jump wires.

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