## Marks 1

Consider a digital display system (DDS) shown in the figure that displays the contents of register X. A 16-bit code word is used to load a word in X, ...

Consider the sequential circuit shown in the figure, where both flip-flops used are positive edge-triggered $$D$$ flip-flops.
The number of states i...

We want to design a synchronous counter that counts the sequence $$0-1-0-2-0-3$$ and then repeats. The minimum number of $$J-K$$ flip-flops required t...

The minimum number of $$JK$$ flip-flops required to construct a synchronous counter with the count sequence $$\left( {0,0,1,1,2,2,3,3,0,0,...} \right)...

Consider a 4-bit Johnson counter with an initial value of 0000. The counting sequence of this counter is

Let $$k = {2^n}.$$ A circuit is built by giving the output of an ݊$$n$$-bit binary counter as input to an $$n$$-to-$${2^n}$$ bit decoder. This circui...

You are given a free running clock with a duty cycle of $$50$$% and a digital waveform $$f$$ which changes only at the negative edge of the clock. Whi...

$$SR.$$ latch made by cross coupling two $$NAND$$ gates if $$S=R=0,$$ Then it will result in

## Marks 2

Consider a 3-bit counter, designed using T flip-flop, as shown below:
Assuming the initial state of the counter given by PQR as 000, what are th...

A positive edge-triggered D flip-flop is connected to a positive edge-triggered JK flip-flop as follows. The Q output of the D flip-flop is connected ...

The above synchronous sequential circuit built using $$JK$$ flip-flops is initialized with $${Q_2}{Q_1}{Q_0} = 000.\,\,$$ The state sequence for this...

Consider the following circuit involving three Dtypes flip-flops used in a certain type of Counter configuration.
If all the flip-flops were reset t...

Consider the following circuit involving three Dtypes flip-flops used in a certain type of Counter configuration.
If at some instance prior to the o...

Given the following state table of an $$FSM$$ with two states $$A$$ and $$B,$$ one input and one output:
If the initial state is $$A = 0, B=0.$$ What...

The control signal functions of a $$4$$-bit binary counter are given below $$($$where $$X$$ “don’t care”$$):$$
The counter is connected as follows:
...

Consider the circuit in the diagram. The $$ \oplus $$ operator represents $$EX$$-$$OR.$$ The $$D$$ flip-flops are initialized to zeros (cleared).
T...

Consider the partial implementation of a $$2$$-bit counter using $$T$$ flip-flops following the sequence $$0$$-$$2$$-$$3$$-$$1$$-$$0,$$ as shown belo...

A 1- input, 2- output synchronous sequential circuit behaves as follows.
Let $${z_k},\,{n_k}$$ denote the number of $$0’s$$ and $$1’s$$ respectively i...

Consider the circuit given below with initial state $${Q_0} = 1,\,\,{Q_1} = {Q_2} = 0.$$ The state of the circuit is given by the value of $$4{Q_2} + ...

Consider the following circuit with initial state $${Q_0} = {Q_1} = 0.$$ The $$D$$ Flip-Flops are positive edge triggered and have set up times $$20$$...

The following arrangement of master-slave flip-flop
Has the initial state of $$P, Q$$ as $$0, 1$$ (respectively). After three clock cycles the output...

Find the maximum clock frequency at which the counter in Fig., can be operated. Assume that the propagation delay through each flip-flop and $$AND$$ g...

## Marks 5

Consider the synchronous sequential circuit in fig.
(a) Draw a state diagram which is implemented by the circuit. Use the following names for the st...

For the synchronous counter shown in fig. write the truth table of $${Q_0},\,\,{Q_1}$$ and $${Q_2}$$ after each pulse starting from $${Q_0} = {Q_1} = ...