Breadboard

From Electronics Wiki

A breadboard is a device used for prototyping electronic circuits. Breadboards allow electronic components to be connected together without soldering so that changes can be quickly and easily tested. Typically a breadboard is a board made of a nonconducting that is covered in drilled holes. The holes are connected together in varying patterns under the surface of the breadboard so that electrons can pass between components based upon how they are inserted into the breadboard.