Which type of flip flops are used in registers ?

[amp_mcq option1=”D type” option2=”SR” option3=”T type” option4=”JK” correct=”option1″]

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UPSC CISF-AC-EXE – 2023

Registers in digital circuits are primarily used for storing binary data. Each bit of data in a register is typically stored in a single flip-flop. The D-type flip-flop (Data flip-flop) is the most suitable and commonly used type for constructing registers because its output (Q) takes on the value of the data input (D) at the clock edge, effectively storing the input data for one clock cycle. This makes it ideal for parallel data transfer and storage applications like registers.

– Registers store binary data.
– D-type flip-flops store the input data (D) when clocked.
– This direct data storage capability makes D-type flip-flops ideal for register implementation.

Other types of flip-flops have different primary uses: SR flip-flops can suffer from an indeterminate state (when S=R=1), T flip-flops are mainly used for toggling (useful in counters), and JK flip-flops are versatile but more complex, often used in counters and control circuits. While JK flip-flops can be configured as D-types, the basic D-type is the direct choice for simple data storage registers.

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