Logic - Shift Registers

Shift registers are low-level logic devices commonly used to convert data in the form of digital logic signals between serial and parallel formats, or to move the position of the data bits within a digital word. Typically implemented using an array of flip-flops integrated into one device, shift registers are a common component of more highly integrated logic devices, though they remain available for applications such as I/O expansion where the function in a discrete form may prove useful.