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A control algorithm is implemented by the NAND – gate circuitry given in figure below, where $A$ and $B$ are state variable implemented by $D$ flip-flops, and $P$ is control input. Develop the state transition table for this controller.

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@Praveen Saini Sir,

why we are not using feedback i/p in next clock instead of specified i/p values ?

$A(t+1) =$ $D_{a}$=$A'B +A'P'$

$B(t+1)=$ $D_{b}$ =$PB'$ $+ P'A$

 Present State Input Next State A B P A(t+1) B(t+1) $0$ $0$ $0$ $1$ $0$ $0$ $0$ $1$ $0$ $1$ $0$ $1$ $0$ $1$ $0$ $0$ $1$ $1$ $1$ $0$ $1$ $0$ $0$ $0$ $1$ $1$ $0$ $1$ $0$ $1$ $1$ $1$ $0$ $0$ $1$ $1$ $1$ $1$ $0$ $0$

Note: Recheck the table by putting value of A, B , P in equations of $A(t+1)$ and $B (t+1)$.

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@Praveen Sir, We are getting A(t+1) and B(t+1) by putting value in equation only then what is the need to recheck?
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@Praveen Sir

here in diagram , no OR gate is there

plz rechk
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@srestha, in question NAND-NAND realization is given you can convert this in AND-OR realization.
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Exactly
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@shubhgupta i think he meant to cross check the answer

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