Filter Structures

Abstract

The last-mentioned function corresponds to the operation of a D flip-flop in digital circuits. Triggered by the rising or falling edge of the applied clock signal, the information at the input is stored and passed to the output. This leads to the situation that we find a sample value at the output of the delay element that was applied to the input during the previous clock period. Shift-register structures, in which sample sequences can be stored and shifted, are realised by serial arrangement of the named delay elements.