An SR latch enters an invalid (forbidden) state when both S and R inputs are:

A flip-flop is a sequential circuit element that stores:

A JK flip-flop toggles its output when both J and K inputs are:

A ripple counter is a sequential circuit in which flip-flops are triggered:

A D flip-flop transfers the value at its D input to the output on the:

A sequential circuit differs from a combinational circuit because its output depends on:

A register in digital logic is a group of flip-flops used to: