What is DFF?

DFF typically refers to a D-type Flip-Flop. It's a type of digital logic circuit used for storing a single bit of data. It has a data input (D) and a clock input. When the clock signal transitions (e.g., from low to high), the value at the D input is captured and stored in the flip-flop's output (Q). D flip-flops are fundamental building blocks in sequential logic circuits, used in registers, memory, and control systems to hold data between clock cycles.