Flip-Flops

See also: 74LS74, 74LS76, Latch

3_1_1_SequentialLogic_D_FlipFlops_JK_FlipFlops.pptx3_1_2_FlipFlopApplications.pptx

Definition
"A sequential circuit based on a latch whose output changes when its CLOCK input receives a pulse." -pltw.org

In other words, a flip-flop is a latch whose output changes on the rising or falling edge of a clock signal.