In electronics, a switch's an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another. The most familiar form of switch's a manually operated electromechanical device with one or more sets of electrical contacts. Each set of contacts can be in one of two states: either 'closed' meaning the contacts are touching and electricity can flow between them, or 'open', meaning the contacts are separated and nonconducting. Since t… (More on Switch)