A master-slave flip-flop circuit is made up of a master part which holds a data signal responsive to a clock signal and outputs the held data signal in the form of complementary output signals, and a slave part which holds the complementary output signals responsive to the clock signal and outputs at...http://www.google.de/patents/US5001361?utm_source=gb-gplus-sharePatent US5001361 - Master-slave flip-flop circuit