1. An electronic device that uses the superconducting properties of materials at very low temperatures to switch or amplify electrical signals.
Usage: technical; electronics; largely historical; developed in the 1950s–1960s but superseded by semiconductor technology

Examples

• The cryotron was an early attempt to create a fast, reliable switching device for computers.
• Researchers in the 1950s believed cryotrons might revolutionize computing by operating at near-absolute-zero temperatures.
• Unlike transistors, cryotrons required expensive cooling systems to maintain superconductivity.
• The development of the cryotron demonstrated the potential of superconductors in electronics.
• Although promising, cryotrons never became practical for widespread commercial use due to their cooling requirements.