Jumper wires are essential components for prototyping and testing electronic circuits. Used to create temporary or semi-permanent connections between components on breadboards or PCBs, they come in various lengths, colors, and connector types such as male-to-male, male-to-female, and female-to-female. Ideal for rapid circuit modification and signal routing, jumper wires are widely used in development, educational kits, and experimental setups to simplify wiring without soldering.