This lecture introduces the Josephson Atto Weber Switch (JAWS) and its operation, emphasizing the importance of output isolation and gate coupling. It discusses the technology's limitations, such as the need for a global clock in latching logic. Additionally, it explores Rapid Single Flux Quantum logic (RSFQ), highlighting its advantages over traditional semiconductor logic, including record clock frequencies and low power consumption. The lecture concludes with a detailed explanation of RSFQ reset logic and its practical applications.