{{No references, date=December 2017 Expansion springs are used as

electrical connectors Components of an electrical circuit are electrically connected if an electric current can run between them through an electrical conductor. An electrical connector is an electromechanical device used to create an electrical connection betwee ...

in some children's electronics kits. They are easy to use with bare

finger A finger is a limb of the body and a type of digit, an organ of manipulation and sensation found in the hands of most of the Tetrapods, so also with humans and other primates. Most land vertebrates have five fingers (Pentadactyly). Chambers 1 ...

s, they accept multiple wires, they require no learning or expertise to use them, and the cost is low. Kits employing these connectors also have the secondary advantage that many additional projects can be made if the components are removed from the springs, and components strung between the springs instead of wires. For even more projects, these kits usually have enough space to add further springs. Their major limitation is that spring connectors can not accept integrated circuit chips.

See also