CUET PG 2021 — Computer PYQ
CUET PG | Computer | 2021A DFlip-flop can be constructed from a/an ____flip-flop
Choose the correct answer:
- A. S-R(Correct Answer)
- B. J-K
- C. T
- D. S-K
S-R
Explanation
The Construction Equation
To make the inputs S and R dependent on a single data input D:
S=D
R=Dˉ
By substituting these into the SR Flip-flop's characteristic equation:
Qnext=S+RˉQ
Qnext=D+(Dˉ)Q
Qnext=D+DQ
Qnext=D
Logic Diagram
The connection looks like this:
-
Input D goes directly to S.
-
Input D goes through a NOT gate (inverter) to R.
Explanation
The Construction Equation
To make the inputs S and R dependent on a single data input D:
S=D
R=Dˉ
By substituting these into the SR Flip-flop's characteristic equation:
Qnext=S+RˉQ
Qnext=D+(Dˉ)Q
Qnext=D+DQ
Qnext=D
Logic Diagram
The connection looks like this:
-
Input D goes directly to S.
-
Input D goes through a NOT gate (inverter) to R.