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The applications of shift registers
Shift Register Applications
• State Registers
– Shift registers are often used as the state register in a sequential
device. Usually, the next state is determined by shifting right and
inserting a primary input or output into the next position (i.e. a finite
memory machine)
– Very effective for sequence detectors

• Serial Interconnection of Systems
– keep interconnection cost low with serial interconnect

• Bit Serial Operations
– Bit serial operations can be performed quickly through device
iteration
– Iteration (a purely combinational approach) is expensive (in terms of
 transistors, chip area, power, etc).
– A sequential approach allows the reuse of combinational functional
units throughout the multi-cycle operation

shift registers can be used in CDMA(code division multiple access) in communication.


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