Shift Registers

Shift Registers

AU: Dec.-15

• The binary information (data) in a register can be moved from stage to stage within the register or into or out of the register upon application of clock pulses. This type of bit movement or shifting is essential for certain arithmetic and logic operations used in microprocessors. This gives rise to a group of registers called 'shift registers'.

• They are very important in applications involving the storage and transfer of data in a digital system.

• Fig. 4.2.1 gives the symbolical representation of the different types of data movement in shift register operations.

According to the data movement in a register, there are different types of shift registers.

Review Question

1. What is a shift register?AU Dec.-15, Marks 2