Read the following statements:

i. Gate is a combinational logic.

ii. JK Flip-flop in toggle mode is not combinational logic.

iii. MSJK Flip-flop suffers from race-around.

iv. Counters are sequential circuits.

Which choice is correct?

(A) i, ii (B) i, ii, iv (C) ii, iii, iv (D) i, ii, iii

1 Answer

Answer :

Read the following statements:

i. Gate is a combinational logic.

ii. JK Flip-flop in toggle mode is not combinational logic.

iii. MSJK Flip-flop suffers from race-around.

iv. Counters are sequential circuits.

Which choice is correct?

(A) i, ii (B) i, ii, iv (C) ii, iii, iv (D) i, ii, iii

Related questions

Description : In a positive-edge-triggered JK flip-flop, if J and K both are high then the output will be ............. on the rising edge of the clock. (A) No change (B) Set (C) Reset (D) Toggle

Last Answer : (D) Toggle 

Description : The output of a JK flip-flop with asynchronous preset and clear inputs is ‘1’. The output can be changed to ‘0’ with one of the following conditions by applying A) J = 0, K = 0 and using a clock B) J = 1, K = 0 and using the clock C) Asynchronous preset input D) J = 1, K = 1 and using the clock 

Last Answer : The output of a JK flip-flop with asynchronous preset and clear inputs is ‘1’. The output can be changed to ‘0’ with one of the following conditions by applying J = 1, K = 1 and using the clock 

Description : In a positive edge triggered JK flip-flop, J = 1, K = 0 and clock pulse is rising, Q will be (a) 0 (b) 1 (c) showing no change (d) toggle 

Last Answer : In a positive edge triggered JK flip-flop, J =1, K= 0 and clock pulse is rising, a Q will be 1

Description : In a JK flip-flop, for what input next state is complement of the present state (A)J=0,K=0 (B)J=1,K=0 (C)J=0,K=1 (D)J=1,K=1

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Last Answer : (A) D Flip Flop

Description : What is the operation of JK flip-flop?

Last Answer : When K input is low and J input is high the Q output of flip-flop is set. When K input is high and J input is low the Q output of flip-flop is reset. When both the inputs ... are high it is possible to set or reset the flip-flop (ie) the output toggle on the next positive clock edge.

Description : What is the operation of JK flip-flop?

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Description : For JK flip flop with J=1, K=0, the output after clock pulse will be (A) 0. (B) 1. (C) high impedance. (D) no change.

Last Answer : (B) 1.

Description : The MSI chip 7474 is (A) Dual edge triggered JK flip-flop (TTL). (B) Dual edge triggered D flip-flop (CMOS). (C) Dual edge triggered D flip-flop (TTL). (D) Dual edge triggered JK flip-flop (CMOS).

Last Answer : Ans: C MSI chip 7474 dual edge triggered D Flip-Flop.

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Last Answer : (C) Master-slave JK flip-flop

Description : What is race around condition in JK flip flop and how it can be eliminated?

Last Answer : For the racing around to take place, it is necessary to have the enable input high along with J=K=1. As the enable input remains high for a long time in a JK latch, the problem of ... to zero. Hence the multiple toggling cannot take place. Thus the edge triggering avoids the race around condition.

Description : Which of the following gates can be used to realize all possible combinational logic functions?  (i) OR gate (ii) NOR gate (iii) Exclusive OR gate (iv) NAND gate (v) AND gate  (A) (iii), (iv) and (v)  (B) (i), (iii) and (iv)  (C) (ii) and (iv)  (D) (i) and (v)

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Description : The frequency of the clock signal applied to the rising edge triggered D flip-flop shown in figure is 10 KHZ. The frequency of the signal at Q is A) 10 KHz B) 2.5 KHz C) 20 KHz D) 5 KHz

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Description : Define flip-flop.

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Last Answer : Logic Diagram:  

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Last Answer :  When A = 0., B = 0, C = 1 then in two input logic gate we get gate NAND gate

Last Answer : A NAND gate is called a universal logic element because any logic function can be realized by NAND gates alone.

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Description : Define combinational logic

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Last Answer : (A) EXCLUSIVE-OR

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Description : What is SR flip-flop ?

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Description : How many flip flop are required to store the binary value of 1101?

Last Answer : What is the answer ?

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Description : In a computer is capable to store single binary bit. A) Capacitor B) Flip flop C) Register D) Inductor

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Description : What is the operation of T flip-flop?

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