Problem

Why are shift registers considered basic memory devices?

Step-by-Step Solution

Solution 1

A register is a sequential digital circuit with two basic functions: data storage and data movement. The storage capacity of a register is the total numbers of bits (s and s) of digital data it can retain. Each stage (flip-flop) in a shift register represents one bit of storage capacity; therefore, the number of stages in a register determines its storage capacity.

Step #2 of 2

The shift capability of a register permits the movement of data from stage to stage within the register or into or out of the register upon application of clock pulses.

The storage capability of a register makes it to be considered as basic memory device.

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